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September 27, 2010
There are not many AM transmitters that are easier to build than this one because the inductor is not tapped and has a single winding. There is no need to wind the inductor as it... [more]
circuit from:http://www.extremecircuits.net/2010/05/simple-am-transmitter.html
September 27, 2010
ICs that in the past were far too expensive for the hobbyist tend to be more favourably priced these days. An example of this is the AD8099 from Analog Devices. This opamp is available for... [more]
circuit from:http://www.extremecircuits.net/2010/05/opamp-vhf-fm-transmitter.html
September 27, 2010
The range of this FM transmitter is around 100 meters at 9V DC supply. The circuit comprises three stages. The first stage is a microphone preamplifier built around BC548 transistor. The next stage is a... [more]
circuit from:http://www.extremecircuits.net/2010/05/range-of-this-fm-transmitter-is-around.html
September 27, 2010
Sure, listening to VHF FM has great advantages over MW/LW AM from the old days — now we have bright stereo free from interference, fading and noise! However, your FM radio will no longer predict... [more]
circuit from:http://www.extremecircuits.net/2010/05/thunderstorm-predictor.html
September 27, 2010
This small circuit is ideal for checking the basic operation of an infrared remote control unit. The circuit is based on the brilliantly simple idea of connecting a piezo buzzer directly to an IR receiver... [more]
circuit from:http://www.extremecircuits.net/2010/05/ir-remote-control-tester.html
September 27, 2010
A very simple device allowing a quick check of common Infra-red Remote-Controls can be useful to the electronics amateur, frequently asked to repair or test these ubiquitous devices. A reliable circuit was designed with a... [more]
circuit from:http://www.extremecircuits.net/2009/07/infrared-remote-tester.html
September 27, 2010
You have to admit that these tiny electronic lamps are handy, and they last almost forever. Around 40 years after Nick Holanyak developed the first LED, they have become just about indispensable. Any self-respecting electronics... [more]
circuit from:http://www.extremecircuits.net/2010/04/led-tester-circuit-diagram.html
September 27, 2010
If you are lucky enough to have a big house, a large garden, and small children, this project just might interest you. It’s actually a telephone ringer capable of making any mains-powered device work from... [more]
circuit from:http://www.extremecircuits.net/2010/05/telephone-ringer.html
September 27, 2010
This simple LED tester consists of a current source with a potentiometer that can be used to adjust the current. The current source is implemented using a type TL081 opamp. The output current of the... [more]
circuit from:http://www.extremecircuits.net/2010/05/very-simple-led-tester.html
September 26, 2010
Going camping nowadays involves taking lots of electronic equipment whether for day to day running or for fun and entertainment. Most of the time a charged lead acid battery and a power inverter would be... [more]
circuit from:http://www.extremecircuits.net/2010/05/car-and-motorcycle-battery-tester.html
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