More about circuit (738)

1-10-1990 | This sound mixer, designed and marketed as a kit by ELV, allows a variety of fading, sound dubbing and voice-over effects to be realized....

1-09-1990 | The circuit described here is a car theft deterrent that locks the starting motor until a pre-programmed code is recognized.

1-09-1990 | Experimenting with electronics is great fun and many of you will have no objection to a drawer full of projects that never made it beyond t...

1-09-1990 | The TDA1522 from Philips Components is a preamplifier chip for tape and cassette recorders. The circuit presented here is remarkable for...

1-07-1990 | This circuit provides the perfect solution in all those cases where you are stuck for a clock generator, yet have one ordinary logic gate l...

1-07-1990 | The Type U450B integrated circuit from Telefunken is a tone sequence generator for applications in toys and electronic household utensils...

1-07-1990 | Any switch or key in a digital circuit may cause problems because mechanical contacts bounce up and down a few times before they close. N...

1-07-1990 | With circuit values as shown, this charger allows up to seven series-connected NiCd batteries to be charged. This number may be increased...

1-07-1990 | Sine wave oscillators normally generate near-perfeet sine waves, but the stability of their output signal is often not very good. The circui...

1-07-1990 | Siemens' Type PID20 is a passive infra-red detector that transforms heat radiation into electrical pulses. Adding two opamps and some mis...