Medium Power FM Transmitter
Thursday, 07 January 2010 23:09 | Written by EEE-LAB | 
| Radio - FM-Radio Transmitter |
This is a Medium Power FM Transmitter. The range of this FM transmitter is around 80-100 metres at 9V-12V DC supply.
The circuit comprises three stages. The first stage is a microphone preamplifier built around BC548 transistor. The next stage is a VHF oscillator wired around another BC548. (BC series transistors are generally used in low-frequency stages. But these also work fine in RF stages as oscillator.) The third stage is a class-A tuned amplifier that boosts signals from the oscillator. Use of the additional RF amplifier increases the range of the transmitter.
Circuit Designed by PRADEEP G.
Source : WWW.EFYMAG.COM
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Last Updated (Thursday, 07 January 2010 23:35)