This circuit was found in 1967 Philips documentation. It uses transistors from that time. Transistors can be replaced with modern equivalents.
This circuit has start and reset switches and can generate signals at long intervals determined by the...
This circuit was found in a Radio Electronics magazine from November 1972. The circuit is based on an...
The 4511 is a 7-segment latch driver providing up to 25 mA in each output. The typical application using the...