This circuit can be used to test crystals from 1 to 20 MHz and also has an output to measure their frequency. We found it in the November 1998 Electronics Now magazine.
E) This soft start dimmer was found in a Motorola documentation from 1968. However, it can be...
This circuit source a voltage proportional to the number of the input pulses. The circuit has a...
This circuit was obtained from an 80s factory manual. The integrated circuits used are uncommon...