Comments: Tiny, portable Guitar Amplifiers are useful for practice on the go and in bedroom/living room environment. Usually, they can be...
Minggu, 27 November 2011
Sound Modifier
Comments: Compared to common Fuzz-box devices, the Sound Modifier circuit allows a choice amongst a wide variety of output waveforms, tha...
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Cheap Pump Controller
This simple but effective circuit can be used to control water level in a container. The prototype is used to pump water out of a bucket tha...
Kamis, 17 November 2011
Full-duplex Intercom
Comments: This design allows to operate two intercom stations leaving the operator free of using his/her hands in some other occupation, thu...
Jumat, 11 November 2011
Speech Amplifier Box
Comments: This circuit is intended to be placed in the same box containing the loudspeaker, forming a compact microphone amplifier prim...
Selasa, 01 November 2011
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Non-Contact Power Monitor
Here is a simple non-contact AC power monitor for home appliances and laboratory equipment that should remain continuously switched-on. A ...
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