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Saturday, July 31, 2010

500mW FM/VHF Transmitter Amplifier Circuit

This is a circuit for power amplifier. This is the figure of the circuit;


This circuit is a high performance low noise 500mW amplifier / booster for all low power FM transmitters such as BA1404, BH1417, BH1415, 433MHz transmitter modules, etc. The amplifier chip is an integrated circuit containing multiple transistor stages and all other parts conveniently within a single small package. Boosting your FM transmitter has never been easier and the output signal can also directly drive 2n4427 or 2n3886 transistors for 1W or 5W of RF output power.

10W Power Amplifier Using TDA2003 IC’s

This is a design circuit for power amplifier that is the circuit diagram of a 10W audio amplifier using the popular TDA2003 IC from SGS Thomson. This is the figure of the circuit;


The IC can easily deliver 10W to a 4 Ohms load at 18V DC supply voltage. The IC can be also operated from 12V and that makes it applicable in car audio systems. The useful features of TDA2003 includes short circuit protection between all pins, thermal overload protection, low harmonic distortion, low cross over distortion etc.

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