Converting a DCM Motor Circuit Diagram

We recently bought a train set made by a renowned company and just couldn’t resist looking inside the locomotive. Although it did have an electronic decoder, the DCM motor was already available 35 (!) years ago. It is most likely that this motor is used due to financial constraints, because Märklin (as you probably guessed) also has a modern 5-pole motor as part of its range. Incidentally, they have recently introduced a brushless model. The...

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2 Siren Sound Use IC555

2 Siren Sound Use IC555Function of the Two Siren Sound Circuit that is using IC 555. Siren Circuit is separated into three parts: low frequency production. The manufacturing shrill frequency and annex of production low frequency is obtained from IC1 connected to astable multi vibrator circuit frequency is prearranged by R1, C2 frequencies with the purpose of are advent revealed of pin 3 is almost 1 Hz through R2 to subsist noble 5. of IC2, a division...

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BENCH POWER SUPPLY

This power supply can be built in less than an hour on a piece of copper-laminate. The board acts as a heat-sink and the other components can be mounted as shown in the photo, by cutting strips to suit their placement.The components are connected with enamelled wire and the transistor is bolted to the board to keep it cool. The Bench Power Supply was designed to use old "C," "D" and lantern batteries, thats why there are no diodes or electrolytics....

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Car Audio Amplifier Instalation Guide

Amplifier and speakers wiring. The amplifier does not always come with wire connection. You need a kit amp wiring harness sold separately. It is important to adjust the harness to the vehicle you have, to the right frequency and sound. The red wires (positive) is thicker than black (ground). A 12 -, 10 – or 8-gauge wire or lower is better sound quality.Connecting the power cable and head unit. Disconnect the negative battery cable car, then the positive....

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Inverter Circuit 12VDC to 220V 50Hz 500W

This is circuit Inverter 12VDC to 220V 50Hz 500W.It easy to make and Low cost. Friends favorite circuit about the the inverter, because like working outdoors, or to backup storage to use when necessary. Most of this is circuit low power, which is not suitable for practical applications. My friends said that he would be about 500 Watt.It is a good size. Use with television receivers and light bulbs as well. When looking for circuit....

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1500 W Cobra Power Inverter 12VDC to 120VAC

Power Inverter manufactured by Cobra, capable converting input battery 12VDC to become 120VAC with power loads (output) up to 1500W.This inverter gives household power on the go. It converts battery power to 120 V AC household power, permitting you to power up office equipment and household appliances from your vehicle. This unit is ideal for such appliances as microwave ovens (1000 watts or much less), coffeemakers, laptops, TVs, video game consoles,...

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LM377 Power amplifier schematic

Different places and use also requires a different power amplifier as well. For this time i gave a circuit schematic power amplifier based on LM377 ic that has similarities with the LM378 and LM1877. Power is smoothly small ouput is 2 X 2.5 Watt and the impedance 4 ohms. Use of this amplifier suitable for portable radio tuner that can be taken every where. Component description :ResistorR1___________________2KR2___________________2KR3___________________1MR4___________________1MCapacitorC1___________________4.7uF...

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High End Power Amplifier Wiring Circuit

As the causes of the heat sink mounting surface to approximately 6 mm from the edge of the circle are fixed, assuming that the amplifier circuits mounted directly on the rails. This means that the leads of the transistors must be folded twice, so they are positioned properly, without a permanent mechanical stress in transistors. For high output transistors, the first corner a little closer to the plastic packaging than expected (in the wide part),...

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Remote Mains Switch Low Voltage Diagram Circuit

This circuit allows a 240V mains appliance to be controlled remotely via low-voltage cabling and a pushbutton switch. The mains appliance (in this case, a light bulb) is switched with a suitably-rated relay. All of the electronics is housed in an ABS box located in proximity to the appliance. The pushbutton switch and plugpack are located remotely and can be wired up with 3-core alarm cable or similar. Cable lengths of 20m or more are feasible with...

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MP3 Player Booster Circuits

MP3 players are all the rage these days. The smaller ones in memory-stick format are particularly easy to take with you; your very own ‘personal sound system’ on the move! It’s when you want others to share your taste in music that you find these players to have a lack of power. You can get round this problem with the help of the MP3 booster, a small amplifier that can be used to connect your MP3 player directly to your Hi-Fi. When you next invite...

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Transformerless 5 Volt DC Power Supply

An increasing number of appliances draw a very small current from the power supply. If you need to design a mains-powered device, you could generally choose between a linear and a switch-mode power supply. However, what if the appliance’s total power consumption is very small? Transformer-based power supplies are bulky, while the switchers are generally made to provide greater current output, with a significant increase in complexity, problems involving...

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Mouse keyboard Switch Unit Diagram Circuit

Unplugging or re-connecting equipment to the serial COM or PS2 connector always gives problems if the PC is running. Even if you only need to swap a mouse or changeover from a graphics keyboard to a standard keyboard. The chances are that the connected equipment will not communicate with the PC, it will always be necessary to re-boot. If you are really unlucky you may have damaged the PC or the peripheral device. In order to switch equipment successfully...

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Petrol Gas Switch For A Pajero Diagram Circuit

My current vehicle, a Pajero, was modified for dual fuel - ie, petrol and gas. However, its necessary to run the vehicle on petrol at regular intervals to stop the injectors from clogging up. This simple circuit allows the vehicle to be started using petrol and then automatically switches it to gas when the speed exceeds 45km/h and the brake pedal is pressed. Alternatively, the vehicle may be run on petrol simply by switching the existing petrol/gas...

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About Microcontroller

The microcontroller is a special type of microprocessor and it integrates the components of microprocessor taking part in single break off which builds a single integrated circuit, it contains the central processing unit basic, input/output peripheral and these microcontrollers needs the policy to hoard the data from inputs. The microcontroller can come about broadly classified like three types as 8-trace, 16-bit, and 32-bit microcontroller.The 8-bit...

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Mono Power Amplifier A1015 BD140 TIP2955

Typically audio amplifier stereo amplifier to a two amplifier. And if a mono amplifier is a single speaker. However this circuit command be present extended to the mono two loudspeaker.But not a equivalence or else serialization access.This makes it needless impedance of the speaker has altered.But will remain to utilize the spokeswoman as a replacement for of the resistance - Collection Peter (RC) of the transistor.The circuit can be alive prolonged...

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Isobaric loading Subwoofer Box

Isobaric is not in reality an inclusion type but a woofer loading method. Isobaric loading can be there used fashionable conjunction with several of the area types, not including perhaps never-ending baffle. Isobaric loading consists of two woofers coupled at once by a suddenly field which is simply slow a sufficient amount to prevent the two woofers from striking solitary an added. The woofers possibly will take place mounted look to face, back...

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5 1 Classic Home Theater System Energy

Low Distortion and Resonance - spokesman method is distortion- otherwise resonance-without charge, but Energy has achieved a significantly decrease distortion level, a plainly audible perfection.The Take Classic 5.1 home theater system also offers terrific performance and great features:Our patented Convergent Source Module (CSM) 3-edge your way poly-titanium woofer and .75-inch hyperbolic aluminum-field tweeter -the kindness of Energy speakersPatented...

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Mini Guitar Bass Amplifier Diagram Circuit

Output power: 6W into 4 Ohm load, FET input stage - Passive Tone ControlTiny, portable Guitar Amplifiers are useful for practice on the go and in bedroom/living room environment. Usually, they can be battery powered and feature a headphone output. This project is formed by an FET input circuitry, featuring a High/Low sensitivity switch, followed by a passive Tone Control circuit suitable to Guitar or Bass. After the Volume control, a 6W IC power...

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2 x 22W BTL Car Audio Amplifier DA1553CQ

This is a 22 Watt car stereo audio amplifier. The circuit is based by a single IC TDA1553 with a few peripheral components, this IC hope against hope code name your stereo car audio classification. The IC TDA1553CQ contains 2×22 W amplifiers with differential input stages and can exist used in favor of connection applications.. The expansion of apiece amplifier is fixed by the side of 26 dB. The device is primarily residential for car broadcasting...

Fuse Failure Alarm 2 LED

This circuit motivation let somebody see the performance of the equipment,otherwise Check the fuse arrived the circuit.The circuit is insignificant and the power supply voltage of all kinds. It parade with LED, 2-color in single. Which is cathode normal kind,the anode has two separate terminals. If the circuit is functioning accurately LED, it exposed in environmentally friendly colour.The display is red, at what time the fuse voguish the circuit...

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Video Distribution Amplifier

With the amount of equipment during in entertainment centers at present the need to survive able to vary the profit of the audio otherwise capture on film sign is required. I found this instance circuit ready to lend a hand while used in conjunction with the Universal Descrambler and a Stabilizer circuit I built instead of making copies of cassette tapes. It not just allowable me the capacity to fine melody the video strength it and helped me redouble...

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LM2876 40W audio power amplifier Diagram Circuit

Using the LM2876 high-performance audio power amplifier circuit can be designed a very simple high efficiency power audio amplifier electronic project capable of delivering 40W of continuous average power to an 8Ω load with 0.1% THD+N from 20Hz–20kHz.The performance of the LM2876 high-performance audio power amplifier, utilizing its Self Peak Instantaneous Temperature (°Ke) (SPiKe™) protection circuitry, puts it in a class above discrete and hybrid...

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Multi channel audio systems

Multi-channel audio systems are widely used within novel sound campaign. The word “multi-channel audio” process with the intention of, the audio method can transpire accomplished of conduct multiple audio channels (more often than not called audio tracks) to rebuild the sound on a multi-loudspeaker setup.Usually two digits separated by a decimal (.) end (2.1, 4.1, 5.1, 6.1, 7.1, and the rest.) are used to classify the various kinds of orator fix-up,...

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Diagram 2N3904 small Metronome

This is knock the melody. It uses begin flasher circuit in building sound click keen go up at a loudspeaker. But each time at Q2 (2N3906) work by origin frequency circuit that use RC and Q1(2N3904) ,R2 – 50K use fine work rate repeatedly through 20-280 sections time per minute. By value change of C1 (22uF) will change the tone of voice in the sound click at happens.eleccircuit.com/small-metronome-using-2n3904/...

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Supply Voltage Monitor Diagram Circuit

A circuit for monitoring supply voltages of ±5 V and ±12 V is readily constructed as shown in the diagram. It is appreciably simpler than the usual monitors that use comparators, and AND gates. The circuit is not intended to indicate the level of the inputs. In normal operation, transistors T1 and T3 must be seen as current sources. The drop across resistors R1 and R2 is 6.3 V (12 –5 –0.7). This means that the current is 6.3mA and this flows through...

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How to build Power Flip Flop Using A Triac

Modern electronics is indispensable for every large model railroad system, and it provides a solution to almost every problem. Although ready-made products are exorbitantly expensive, clever electronics hobbyists try to use a minimum number of components to achieve optimum results together with low costs. This approach can be demonstrated using the rather unusual semiconductor power flip-flop described here. A flip-flop is a toggling circuit with...

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How to build Personal alarm

Small, portable, anti-bag-snatching unit Also suitable for doors and windows controlCircuit diagramParts:R1 330K 1/4W Resistor R2 100R 1/4W Resistor C1 10nF 63V Polyester or Ceramic Capacitor C2 100µF 25V Electrolytic Capacitor Q1 BC547 45V 100mA NPN Transistor Q2 BC327 45V 800mA PNP Transistor SW1 Reed Switch and small magnet (See Notes) SPKR 8 Ohm Loudspeaker (See Notes) B1 3V Battery (two A or AA cells wired in series etc.) Device purpose:This...

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Simple Automatic Switch For Audio Power Amplifier

Simple Automatic Switch For Audio Power Amplifier Circuit of an automatic switch for audio power amplifier stage is presented here. The circuit uses stereo preamplifier output to detect the presence of audio to switch the audio power amplifier on only when audio is present. The circuit thus helps curtail power wastage. IC1 is used as an inverting adder. The input signals from left and right channels are combined to form a common signal for IC2,...

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5 Zone Alarm System

This is a complete alarm system with 5 independent zones suitable for a small office or home environment. It uses just 3 CMOS ICs and features a timed entry / exit zone, 4 immediate zones and a panic button. There are indicators for each zone a "system armed" indicator. The schematic is as follows: Circuit Notes Each zone uses a normally closed contact. These can be micro switches or standard alarm contacts (usually reed switches). Suitable switches...

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Using 555 Timer Voltage Controlled Switch

In this circuit the 555 timer is used in a novel way, as a voltage controlled switch.The old and omnipresent NE555 can be very good at something it was not meant for: driving relays or other loads up to 200 mA. The picture shows an example circuit: if the input level rises over 2/3 of the supply voltage - it will turn on the relay, and the relay will stay on until the level at the input drops below one third of the supply voltage.If the relay...

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Simple Circuit Board Checker

This little circuit indicates the basic integrity of a printed board, detecting 0V, positive supply voltage from less than 3V to 30V and floating parts. If the probe is floating, as it would be in a broken track, then both LEDs barely light up, since there is no current to drive the transistors, but if the probe touches 0V or a positive voltage one or other lights. A digital signal should light them in proportion to the mark-space ratio whereas...

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Solid State Relay Required Only 50uA Drive Current

This circuit demands a control current that is 100 times smaller than that needed by a typical optically isolated solid state relays. It is ideal for battery-powered systems. Using a combination of a high current TRIAC and a very sensitive low current SCR, the circuit can control about 600 watts of power to load while providing full isolation and transient protection.Sourced by :l...

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Electronic Doorbell with Counter Circuit Diagram

This circuit is a doorbell with counter, that means it counts how many times the bell is triggered. It uses a chip synthesizer sound, the HT-2811 ms nothing prevents you from using another device sound generator. The HT-2811 reproduces the sound of a "ding-dong" doorbell. Besides this ic, the circuit includes a CMOS 4026 and Display Driver IC which counts the total number of visitors. Electronic Doorbell with Counter Circuit Diag...

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Simple Comperator Frequency LED Circuit Diagram

This Simple Comparator Frequency LED Circuit Diagram uses a comparison frequency IC 74HCT00, the device enabling frequency pulses are compared. Frequency F1 (signal frequency channel 1) and F2 (signal frequency channel 2). If the two frequencies are equal, then LED lights.Comperator Frequency LED Circuit Diag...

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Build a Smart battery charger

This is a smart battery charger can protect your vehicles battery from failing and will prolong its life – theyre fully automatic so you can connect and forg...

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Build a Smart battery charger

This is a smart battery charger can protect your vehicles battery from failing and will prolong its life – theyre fully automatic so you can connect and forg...

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Build a Blocking Circuit with Alarm for Bicycle

Here is an interesting circuit, it is used to make a kind of lock or locks for bicycles, it allows owners to implement a bicycle lock and electronic alarm with a low cost. The operation of the electronic lock is simple, it has a circuit that uses a tone generator IC UM3561, this IC generates a sound when your bike has the protection wire that surrounds the wheel broken. Blocking Circuit with Alarm for Bicycle Circuit DiagramClick here to download...

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