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Archives for February, 2013

Portable jammer

Portable jammer Portable jammer and signal removal for cell phone, WiFi, and GPS signals Portable jammer, signal removal Portable Signal Jammer circuit 20M Radius. High Power Signal Jammer Portable powerful and portable solution to completely block a nearby cell phone,  WiFi, and GPS signals. Can be used around the world. Strong and effective, this portable […]

NiMH Cell Battery Tester circuit

NiMH Cell Battery monitoring circuit NiMH Cell Battery Tester circuit using TLC555, 2222, ZXM61N02P

CIRCUIT DIODE SWITCHED SYNTHESISER

Now I shall introduce my somple diode counter. To start off with, the MC145152-2 A-counter can have a count of 512, 1024, or 2048. This means that a 12.8MHz crystal, divided by 1024, will give you a reference frequency of 12.5kHz. You could alternatively use 6.4MHz divided by 512. Not many options there! You still […]

Aiphone intercom systems – 60W Intercom circuit Using Transformer

Aiphone intercom systems – 60W Intercom circuit Using Transformer Parts R1 ………………………… 5K6 R2,5,9 …………………….. 100 R3 ………………………… 47K R4 ………………………… 470K R6 ………………………… 12K R7 ………………………… 68K R8 ………………………… 33 R10 ……………………….. 56 R11 ……………………….. 1K5 R12,13 …………………….. 1K R14,15 …………………….. 0,22/ 5W R16 ……………………….. 3K C1,4,5 …………………….. 104pF C2,3 ………………………. 47uF/16V C6 ………………………… […]

Bridge Adapter

Bridge Adapter For Power Amplifiers using TL072 Bridge Adapter For Power Amplifiers using TL072

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