Variable Power Supply 0-24V – 2N3055
The 2n3055 variable power supply circuit described here is of an economical smooth variable power supply which offers 0V to 24V. It provides all controls and short circuit protection with acceptable regulation and a ripple free supply and yet uses very few components.
The transformer used is a readily available 12V-0-12V, 2A type connected at the end terminals for 24V, 1A output. After rectification and filtering, a constant reference voltage is obtained by the 24V, 500mW zener diode.
|5A Diode Bridge
|24V 500mw zener
|SEC 24V, 1AMP
The pots used for voltage variation are 23mm carbon-film linear type and for current limit 10 ohm, 1w wirewound type is used. All the components can be connected on a group board. Necessary heatsinks should be provided for both SL100 and 2N3055.
Also you can try below 2n3055 power supply circuit using LM741 op amp IC.
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