Bench Supply: Difference between revisions
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The Hacklab now has a small bench power supply! It is based on LM78xx regulators. | The Hacklab now has a small bench power supply! It is based on LM78xx regulators. | ||
It has +5V, +12V and a variable output. The variable output has a digital voltmeter so you can see what voltage you have selected. | It has +5V, +12V and a variable output (1.2V to 16V). The variable output has a digital voltmeter so you can see what voltage you have selected. | ||
The power supply can drive about 1A into each channel. This is plenty to drive Arudinos, PICs, logic, or whatever small project you're working on. If you're working on a big project, with big LEDs or motors, it might not be enough. | The power supply can drive about 1A into each channel. This is plenty to drive Arudinos, PICs, logic, or whatever small project you're working on. If you're working on a big project, with big LEDs or motors, it might not be enough. | ||
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The fuse on the back is 0.5A Slow-blow. | The fuse on the back is 0.5A Slow-blow. | ||
The schematic can be found HERE and all the parts were purchased at the Home Hardware -- you can easily make your own if you want. It took me about a day and $75 to build this one. | The schematic can be found [[Media:Benchsupply_schematic.png|HERE]] and all the parts were purchased at the Home Hardware -- you can easily make your own if you want. It took me about a day and $75 to build this one. | ||
-- Dan | -- Dan | ||