For my next project I broke things up into stages. The first step was to build the power supply for the audio controller section of my next amplifier. This is a 3-way power supply for that audio controller. The various circuits within the controller required +5VDC, +12VDC and -12VDC. This supply was designed to handle all of those needs. It used 2 transformers and three voltage regulators with heat sinks.
On the left you can barely make out in the photo the 3 power LEDs, which monitored the status of the three supplies. The top one monitors the +5VDC supply, while the next two (red / yellow) monitor the +12 / -12VDC supplies. On the right you can see the two rectifiers I used off the transformers before going into the electrolytic caps and finally into the regulators, which were LM7805, LM7812 and LM7912, respectively.
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THIS IS A RESTORED ARCHIVE PROJECT AND AS SUCH MAY BE MISSING PHOTOS, PARTS LIST, SCHEMATIC, SOURCE CODE, ETC.
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