Found in a Motorola manual from the 1980s, this circuit uses components from the era. The circuit controls lamps from 5 to 48 W from 12 to 14 V.
Using bipolar, FETs and unijunction this long-lasting timer can reach 10 hours with good quality...
The configuration shown is from the National Semiconductor Linear Applications Handbook. The...
This shield circuit uses a common CMOS port. The voltage depends on the interfaced logic. The...