http://amplifierlab.com Electronic Amplifier Circuits-Power amplifier, audio amplifier designs and circuits Fri, 11 Jun 2010 07:00:10 +0000 http://backend.userland.com/rss092 en 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 ICs are wired to work as astable multivibrators. But these two timer ... http://amplifierlab.com/555-timer-police-siren-circuit/2010/06/11 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 its main part. The actual output current delivered by this circuit is ... http://amplifierlab.com/voltage-doubler-circuit/2010/06/10 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 a voltage range between 195V and 265V. The device may not work ... http://amplifierlab.com/3-phase-auto-changer-circuit/2010/06/10 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 Q2 (BC 109C) which are the central active components in this circuit. ... http://amplifierlab.com/baxendall-circuit/2010/06/09 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 and receiver (decoder) section. Among these, the transmitter stage uses IC1 (RF ... http://amplifierlab.com/fm-remote-encoderdecoder-circuit/2010/06/09 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 of this circuit is between 8 and 35V DC. The output voltage ... http://amplifierlab.com/switching-regulator-circuit/2010/06/09 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 is it has four operational amplifiers embedded in this chip. This IC ... http://amplifierlab.com/microphone-pre-amplifier-circuit/2010/06/02 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 IC having a very high gain. This IC has got its primary ... http://amplifierlab.com/capacitance-meter-circuit/2010/06/02 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 LDR which senses light intensity. A transistor Q1 (BC 107) is included ... http://amplifierlab.com/light-activated-switch/2010/06/01 Circuit Description Here is the circuit diagram of common function generator circuit. The central part of this circuit is the function generator IC ICL 8038. This function generator IC can generate waveforms such as sine, square and triangular at the same time. This IC has got an added feature that it ... http://amplifierlab.com/simple-function-generator-circuit/2010/05/31