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The author wanted a very cheap and simple alarm for some of his possessions, such as his electrically assisted bicycle. This alarm is... -
This circuit is similar to the preceding circuit of the attenuator. Gain of up to 100 can be achieved in this configuration, which is usef... -
In days gone by a radio amateur always had a dip meter close to hand in his ‘shack’. Now that people can afford oscilloscopes, the poo... -
This is a simple ceiling fan regulator circuit diagram. It is used to control the speed of a ceiling fan. In the other words it is an AC mot... -
Using a few diodes and a LED, you can make a nice indicator as shown in associated schematic diagram that can be used for a lot of appl...
