12V Auto-Powered Circuit For Cassette Recorders

  
A regulator allows you to power a 7.5-V cassette recorder or other device from a 12-Vdc au
12V Auto-Powered Circuit For Cassette Recorders - schematic

to system. About 600 mA is available from the circuit. Q3 should be heatsinked because it dissipates up to 4 W. F1 should be a slow-blow fuse so that the surge caused by CI does not cause unnecessary fuse failures.




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