This circuit is the digital indicator for the previous circuit and can be used with similar circuits. The circuit is from an article in Radio Electronics magazine, June 1987.
This step of two transistors has a high input impedance due to the use of FET. We can use BF245 for...
This digital timer provides timings from 1 minute to 10 hours with indication on a 3-digit...
The circuit shown is suggested by National Semiconductor's Linear Applications Handbook. The base...