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portable cd player adapter for car (LM7805)

2017-01-16 02:23  
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Whenever I`m in the car listening to my favourite CD, it
always happens-my batteries go dead. To solve that problem, I
built this extremely simple regulator circuit. It steps down the
12V from the lighter socket to 9V which is used by the CD player.
Different CD players (I have a Sony Discman) may require
different voltages, so just use the correct regulator. All the
78xx series regulators have the same pin out, so the circuit is
universal.

Schematic

cdsupply portable cd player adapter for car

Parts

U1 1 7809 Or Other Regulator (See “Notes”) See Notes

MISC 1 Cigarette Lighter Plug, Plug For CD Player, Heat Sink For U1, Wire, Case.

Notes

The voltage your CD player needs will determine which
regulator you use. For 9V, use the 7809. For 6V, use the 7806.
For the unlikely 5V use the 7805. Remember that whatever
regulator you use, you will need to heat sink it. The metal case
or metal cover on the case makes a great heat sink.

This article describes a portable cd player adapter for car (LM7805). The content is very simple, very helpful. Components in this article can help you understand better understanding of this article. For example, in this article, you can go to find and buy these components:LM7805.

I built the circuit in a small case with the long wire to the
cigaratte lighter plug coming out one end, then another, slightly
shorter wire going out the other end to the CD player.

Triple check your wiring. You would hate to ruin an expensive
CD player because you reversed one of the connections or hooked
the regulator up backwards…….

 


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