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Transistor astable multivibrator

aaronmawunze99

New Member
Hie, guys can you help with a circuit of a high frequency astable multivibrator capable of achieving 500khz or higher and using discrete components only (no ICs)
 

crutschow

Well-Known Member
Most Helpful Member
Probably.
Why does it need to be discrete?
Is this homework?
 

aaronmawunze99

New Member
I want to make a switch mode power supply for car amplifier. You know it uses ferrite cored transformer and that requires high frequencies, not the ordinary 50Hz
 

Nigel Goodwin

Super Moderator
Most Helpful Member
I want to make a switch mode power supply for car amplifier. You know it uses ferrite cored transformer and that requires high frequencies, not the ordinary 50Hz
A multivibrator would be a VERY poor choice, use a proper switch-mode IC.

You don't just use a free-running oscillator, you MUST have feedback to stabilise the output.

Here's a suitable example of the type of thing, with lot's of advise:

http://sound.whsites.net/project89.htm
 

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