That RF Amplifier is for boosting small fm transmitters and bugs. It use two Philips 2N4427 and its power is about 1Watt. At the output you can drive any linear with BGY133 or BLY87 and so on. Its power supply has to give 500mA current at 12 Volts. More voltage can boost the distance but the transistors will be burned much earlier than usual.! In any case do not exceed the 15Volts.
Datasheet file1: Click here to download 2N4427.pdf datasheet.
Comments
Jacks wrote on Aug 3, 2007
Excellent Circuit
123 wrote on Aug 29, 2007
what is the inductance wire number?
nyogonk wrote on Mar 14, 2009
Good circuit
Russ wrote on Jul 27, 2009
Good if you need linear amplification. FM doesn't need linear amplification. A Class C amplifier is all you need. This is , however a good booster if you have a very weak input signal (not enough to drive a class C amp). Suggest your final amplifier be class C for best results.
Rating Rating: 0.00 / 10 (0 Vote cast)
|
New Circuits Main Categories |
|
|
