This circuit adopts the rather unusual Bowes/White emitter coupled multivibrator circuit. The oscillation frequency is about 1Hz and is set ...
Senin, 24 Agustus 2009
This circuit is intended as a reliable replacement to thermally-activated switches used for Christmas tree lamp-flashing. Parts: R1_________...
This circuit uses a single chip, IC BA3812L for realizing a 5 band graphic ...
This very simple circuit uses a transformer ,two diodes , a capacitor and an ammeter.To charge a battery just connect the + and - terminal...
Minggu, 23 Agustus 2009
FM Telephone Bug
Rob Bowman
09.28
This is a simple transmitter that when connected to a phone line, will transmit anything on that line (execpt the dial tone) to any FM radio...
Sabtu, 22 Agustus 2009
Most of the CDROMS available have an Audio-Out Output to either plug in the headphones or ...
Police Siren
Rob Bowman
08.53
This circuit produces a sound similar to the police siren.It makes use of two 555 timer IC...