Free circuit schematics - wiparat.com

This is a high quality power supply with a continuously variable stabilized output adjustable between 0 and 30VDC. the LM 723 is the heart of the power supply which drives the BD137 and then the 2N3055. The circuit provides short circuit protection. [...] Link
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bench variable power supply 0-30V
DC Supply adjustable Voltage 0-20V at 1A
Simple [...]

Circuit Peak Level Indicator by LM723
This the circuit checks signal sound level or Circuit Peak Level Indicator by LM723. Usual we often lead IC LM723 or UA723 come to use do , DC voltage Regulator. But for this circuit , build the circuit can check signal sound level with. [......] Link
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Preamplifier 88-108 MHz with [...]