This compact power supply can be used on the workbench for up to 1 A load. The transformer has 1 A secondary current. The integrated circuit must be mounted on a heatsink.
This TTL decoder circuit for PC ports was found in a document from 1992. The power supply can be...
This circuit is from an old Popular Electronics, but it can be easily implemented nowadays, even...
The basis of this circuit is a CA3130 operational amplifier. The transistor can be BC548, and the...