Monthly Archives: September 2013

The Forgotten “H” Pad

As I work on my home studio I’ve run into level problems in the rack. My rack is not crooked, but my levels are! Anyone who has shot excessive level into an electronic device knows that bad things happen. Most … Continue reading

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Dual Side Power Supply

I recently ran up against a problem where I needed a dual sided power supply for an early 70s piece of equipment. The original manufacturer was out of business, and their PCB was encapsulated in potting solution. All I knew … Continue reading

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Single End Power Supply

Need a small power supply for a project? This one is based on the LM340 or 78xx series regulator. It can be constructed for +5, +6, +9, +12, +15, +18, or +24 volts DC. This supply was initially designed for … Continue reading

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