When the 24 V battery voltage drops below 18 V, this circuit cuts off its discharge. The circuit is from 1968 documentation. It can be adapted to operate with other voltages.
This basic circuit is from an old documentation. The relay must be 50 mA maximum and must have a...
This oscillator with the 4049 can generate signals up to about 14 MHz according to the article in the...
We found this circuit in the Linear Applications Handbook of the National Semiconductor of 1994....