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 Dual LED Flasher by 2N2907

Wednesday, April 9th, 2014

This circuit calls more Free Running Multivibrator work resemble Flip Flop. Which encourage itself repeatedly. The Q1 and Q2 be Transistor PNP be usable general (2N3906,2N2907, etc.) The R1 and R2 limit current that flow through LED the bilateral. If enhance the value C1 and C2 the rate something Flasher slow down. Request friends have […]


 1.5V LED flasher using BC556 and BC546

Monday, April 7th, 2014

This is a low voltage LED flasher with 1.5V using BC556 and BC546 transistors. And other electronic devices is 4 resistor and 3 capacitors only. When about 15 years ago, making the LED flasher easy. because I use IC-LM3909 with an external device, only one resistor and one capacitor only got it to work. Also, […]


 Non contact ac detector voltage tester using CD4060

Sunday, April 6th, 2014

Tools that features equivalent of a professional, easy to use, cheaper, and more importantly, safe for use. For checking to find AC 220 Volt or 120V or call that AC main power in various points have or not? Most use a screwdriver to check the electricity. It is a lightweight, easy to carry. But the […]


 Adjustable AC voltage power supply, 0-30V 3A

Saturday, April 5th, 2014

When we experiment a AC power. We always use power transformer as source but it cannot adjust voltage though it have a adjustable form but them too expensive. This project so may a good way of us. This is an Adjustable AC voltage power supply that apply output of 0-30V at 3A by use electronic […]


 DIY AC 220V Power Strip for my electronic work bench.

Friday, April 4th, 2014

DIY AC 220V Power Strip for my electronic work bench. In experiment an electronic project that use AC-line as power source. When we turns on-off load or the project. I always remove AC plug input. But it does not convenient and very slow when happens an accident. Then I try to use an Universal Surge […]



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