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Radio Collar Transmitter Circuit

admin May 13, 2010 2 Comments
Circuit Description The circuit diagram of Radio Collar Transmitter has been described here. This circuit is based on the IC NE 555 which is the central part of this circuit. In this circuit the IC NE 555 plays the...
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Simple Lamp Dimmer Circuit

admin May 8, 2010 3 Comments
Circuit Description The circuit diagram of simple lamp dimmer is given here. This circuit is based on BT 136 Triac and can be also used as a fan regulator circuit.  The working principle of this circuit is the use...
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Dual Adjustable Power Supply Circuit

admin May 7, 2010 1 Comment
Circuit Description The circuit diagram of Dual adjustable power supply has been given here. This circuit is based on two ICs namely LM 317 and LM 337. Among these ICs, LM 337 is the negative complement of LM317. These...
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Long Range FM Transmitter Circuit

admin May 7, 2010 1 Comment
Circuit Description The circuit diagram of Long Range FM transmitter having a power output in the range of 0.5 -2W has been explained here. High power transmitters are required if the transmission path contains many obstacles or the transmission...
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Simple Electronic Combination Lock Circuit

admin May 3, 2010 3 Comments
Circuit Description This section describes the circuit diagram of simple electronic combination lock. The central part of this circuit is the IC LS 7220. This circuit is used for the activation of a relay which controls a device on/off...
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Mini Amplifier Circuit

admin May 3, 2010 3 Comments
Circuit Description The circuit diagram of Mini 2 W amplifier has been published here. The core part of this circuit is the IC TDA 7052 from Philips Semiconductors. The IC TDA7052 is a mono output amplifier. This IC has...
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Simple Amplifier Using LA 4440 IC

admin May 3, 2010 5 Comments
Circuit Description Circuit diagram of 19 Watt amplifier using LA 4440 has been published here. This amplifier circuit is based on the IC LA 4440 developed by Sanyo. In this circuit, amplifier IC LA 4440 acts as bridge amplifier....
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Simple 3 Watt Stereo Amplifier

admin April 30, 2010 2 Comments
Circuit Description The following circuit diagram represents 3 W stereo amplifier. This circuit is based on the IC MAX 7910. This particular IC has some added features like thermal overload protection. This amplifier IC is a stereo amplifier IC....
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50 Watt Transistor Amplifier Circuit

admin April 28, 2010 3 Comments
Circuit Description The circuit diagram given below is 50 W transistor amplifier. This circuit is a class-B amplifier. In this circuit, seven transistors are used. Out of these transistors, six transistors acts as preamplifiers and the rest one is...
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