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 Simple Electronic clock sound using IC4011

Wednesday, April 16th, 2014

The sound of insects such as crickets, cicadas, resulting from flutter briefly. We can use a multivibrator to connects as sound generator circuit to imitate these insects sound. Some electronic clock alarm tone also sounds similar to these insects. As Figure 1 is simple clock alarm sound generator that can assemble on a breadboard right […]


 Simple Tone Generator using inverter logic form.

Tuesday, April 15th, 2014

We use a simple oscillator circuit in very many projects. I like to use a inverter logic gate since it is easy and cheap. But we do not use it directly. Mostly I use IC4011 nand gates since includes for separate four positive logic nand gate on a single silicon chip. Enough for general use […]


 20 Electronic Projects # 1

Thursday, April 10th, 2014

Now I am Electronic projects circuits blogger. It is hard work and dedicated time. We certainly need an income families. Many years ago, I had main revenue from adsense. Now the sponsor is ads banner And a commission from amazon I am so thankful all my friends a lot. Some friends wanted me to sell […]


 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, […]



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