This long interval timer was found in the September 1976 issue of Radio Electronics magazine. The output can be used to control a relay. The circuit achieves timings of up to 14 hours.
This circuit is part of a sound system project published in the October 1970 issue of Radio...
This circuit is from the National Semiconductor Audio Handbook, as it uses an audio power...
May 2017 - The new 36V TLVx171 Series of General Purpose Operational Amplifiers from Texas...