![dc-power-supply-9-volt-using-tip31-transistor DC Power Supply 9 volt using TIP31 transistor]()
Today I receives electricity old printer from a friend. I think it can’t is usable , but power supply circuit still can be usable , modify be power supply source in electronics all work. I then build to is DC Power Supply 9 Volt Regulator, that can give current get about 1 Amp arrive at [...]