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TL494 Meanwell switching power supply to adjustable power supply TL494明纬开关电源改可调电源

DIY alligator clip wire, easy to use when the electrician repair Materials: one power cord, four alligator clips.

DIY soldering iron thermostat, so that ordinary soldering iron into a temperature-adjustable iron to save dozens of dollars Materials: a dimming speed module, a soldering iron, a power line, a 2-hole socket, a shell

Repair cell phone charger, after inspection is an electrolytic capacitor bulge, just need to replace the capacitor to solve the problem, very simple

Material: non-polarity capacitor 0.68uf 1pc, 1M ohm resistor 1pc, 1N14007 rectifier diode 2pc, 6.2V regulator 1pc, 400V 22uf electrolytic capacitor 1pc, 5mm LED light 2pc, cell phone charger case 1pc Must be installed inside the shell in order to use, can not touch the metal part, because it is 220V, have electrical knowledge in order to DIY, otherwise it is easy to have the risk of electric shock