This oscillator with emitter follower was found in an American documentation from the 80's. The circuit generates 100 MHz signals and the transistors admit modern equivalents.
We find this simple circuit that operates at a frequency of 5 to 10 MHz in an old English...
This tester was found in a 90’s Popular Electronics. The integrated circuit is CMOS 4011. The...
We found this circuit in a 1980 publication. It can be applied to Triacs of the TIC series and the...