BFY51? would that work?
no... any other?
you don't want a whatever power transistor...you need one which can have enough gain for the frequency range you want it.
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BFY51? would that work?
Why not look at its datasheet from Philips?BFY51? would that work?
but aint kitchen experimentalist needs to improvises everything? where the fun if you could sit in an lab and get whatever part you want.
There are a few ways to make a Colpitts oscillator. This way is used in most FM transmitter circuits.I have some questions here for the mod4 FM transmitter:
What is the type of configuration for the oscillator? Earlier post if not mistaken stated Colpitts? But how come it is different from the configuration I found on the net?
You could re-design the circuit to use a FET or two but the performance will be the same or with less output power.With all the 2N3904 BJT transistor, is it possible to change all the existing one to FET type? as FETs are more energy efficient. If possible, any good suggestion which FET is suitable for that fm transmitter?
Eliminate the pre-emphasis and use a data carrier frequency that is 20kHz. Re-design your radio to demodulate the 20kHz data.I planned to inject RDS signal into this fm transmitter, any idea how can I make it work?
Eliminate the pre-emphasis and use a data carrier frequency that is 20kHz. Re-design your radio to demodulate the 20kHz data.
My Mod4 FM transmitter has a modulation limit of about 30kHz. It does not work as high as 57khz because it is designed for audio.
If you re-design the FM oscillator to use a varactor diode for modulation then maybe it could work at 57kHz.