Step down converter with MC34063A circuit
The step down converter is the power unit to make the output voltage which is lower than the input voltage.
The converter which was made this time makes +2V to +10V output voltage with the input voltage of +12V.
Because it makes the limitation value of the input electric current about 1.3A, the maximum with the input electric power is about 16W.
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Hi
This circuit is close to what I want to construct.
I have a 25-0-25V transformer and I want to make a variable voltage power supply based on this. The basic rectification and smoothing is no problem. Ideally I want of 1.5-20V (+ve and -ve) with a maximum of 1A output.
Would changing VR1, R2 and R3 be enough?
Regards
Andrew