This simple timer with unijunction transistor was found in an old American technical documentation. We can use 2N2646 for the unijunction and BC548 for the transistor.
This circuit can be used in traffic alarm systems. The relay trips when the light falling on the...
This filter was found in documentation from the 90s. The cutoff frequency is 2900 Hz. Changes can be...
June 2017 - New Honeywell MT MICROSWITCH Series can be ordered from Mouser Electronics for...