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This system needs to be attached to an existing car stereo amplifier to add extra ‘boom effect’ to the music. It has a dedicated loudspeake... -
In this circuit we'll learn about a simple high low voltage cut off circuit with alarm which can be used for protecting all 220V or 12... -
The preamplifier is intended for use with dynamic (moving coil–MC) microphones with an impedance up to 200 Ω and balanced terminals. It is ... -
Here's a simple VHF FM transmitter that could be used to play audio files from an MP3 player or computer on a standard VHF FM radio ... -
The TRIAC is a three terminal semiconductor device for controlling current. It gains its name from the term Triode for Alternating Curren... -
The motion sensor switch circuit can automatically initiate a water sprinkler nevertheless you can easily put it to use as a motion sensor ... -
This circuit lets you control a pump, to keep the level of water in a cellar below a certain threshold , for example. Power is supplied to ... -
This circuit will illuminate a LED if one of your telephones is in use. It should work in all countries (Including UK) that have a standing ...