2 Siren Sound Use IC555

2 Siren Sound Use IC555

Function 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 manufacture high-frequency input next to Pin 5 pray tone the origin of oscillator IC2 is the move of voltage from the output of IC1 frequency of IC2 is being set by R3, C3, which, if C3 help. will be alive very low tone if C3 is a lesser amount of treble The output preference suffer to podium out at home three legs of IC2 to stimulate B of Q1 to amplify signals to drive speakers.

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How Build a Solar Charger use IC LM317

 At this point is a Solar Charger Circuit to is used to charge information Acid otherwise Ni-album batteries using the solar energy power. The circuit harvests solar energy to charge a 6 volt 4.5 Ah rechargeable battery in favor of various applications. The stallion has Voltage and Current supervision and terminated voltage restrict sour facilities.

Circuit uses a 12 volt solar panel and a changeable voltage supervisor IC LM 317. The solar panel consists of solar cells each one rated on 1.2 volts. 12 volt DC is presented from the panel to charge the battery. Charging current passes through D1 to the voltage watchdog IC LM 317. By adjusting its Adjust pin, output voltage and current can subsist regulated.

VR is placed amid the adjust pin and ground to provide an output voltage of 9 volts to the battery. Resistor R3 confine the charging current and diode D2 prevents discharge of current from the battery. Transistor T1 and Zener diode ZD conduct yourself having the status of a stop rotten switch at what time the battery is ample. Normally T1 is rancid and battery gets charging current.

After the terminal voltage of the battery rises over 6.8 volts, Zener conducts and provides station current to T1. It followed by turns on education the output of LM 317 to prevent charging. If you want to specific voltage / current output , you can replacing ZD on the circuit above.

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