555 Timer Police Siren Circuit

admin June 11, 2010 5 Comments
Circuit Description Police siren circuit given here is a circuit based on NE 555 timer IC. This circuit uses two NE 555 ICs (IC1 and IC2) and which are the core working parts of this circuit. Here two timer...
read more

Voltage Doubler Circuit

admin June 10, 2010 1 Comment
Circuit Description The circuit diagram given here is a simple voltage doubler circuit. In this circuit the central part is the timer IC NE 555. This circuit also includes two transistors Q1 (BC 107) and Q2 (BC 177) as...
read more

3-Phase Auto Changer Circuit

admin June 10, 2010 3 Comments
Circuit Description The circuit given here is a three phase auto charger circuit. Any modern electrical or electronic device can operate from 230 V ac supply with 15% tolerance in voltage. That is the device will work normally for...
read more

Baxendall Circuit

admin June 9, 2010 4 Comments
Circuit Description Here is the circuit diagram of Baxendall tune control circuit. The name Baxendall for this circuit is because this circuit is based on the tune control circuit developed by Baxendall. This circuit uses two transistors Q1 and...
read more

FM Remote Encoder/Decoder Circuit

admin June 9, 2010 2 Comments
Circuit Description The circuit diagram of FM remote encoder/decoder has been published here. The main parts of this circuit are the ICs RF 600E and RF 600D. This circuit consists of two main parts such as transmitter (encoder) section...
read more

Switching Regulator Circuit

admin June 9, 2010 1 Comment
Circuit Description The circuit diagram of 3A switching regulator has been published here. The central part of this circuit is the IC LM 317. This voltage regulator can deliver a maximum output current of 3A. The input voltage range...
read more

Microphone Pre-amplifier Circuit

admin June 2, 2010 2 Comments
Circuit Description Here is the circuit diagram of three input microphone preamplifier. This is a mic mixer preamplifier centered on the high gain operational amplifier IC LM 348. This IC LM 348 is a quad operational amplifier IC that...
read more

Capacitance Meter Circuit

admin June 2, 2010 4 Comments
Circuit Description The circuit diagram of simple capacitance meter has been published here. The core part of this circuit is the frequency to voltage converter IC LM 2917 developed by National Semiconductors. This IC LM 2917 is a monolithic...
read more

Light Activated Switch

admin June 1, 2010 1 Comment
Circuit Description The circuit diagram of light activated switch circuit has been described here. The core part of this circuit is the operational amplifier IC LM 311which acts as a voltage comparator here. This circuit also consists of an...
read more
Popular tags