Found in a 1970 EEE, this circuit can be applied to TTL ports. The supply is 5 V and the frequency, which depends on the crystal, can be between 1 and 3 MHz.
For trigger high power loads connected to the power grid, nothing better than using a TRIAC. For...
Fully-Certified Software Development Kit Leverages Hardware-Based Calculations to Create Fast,...
This circuit is from an old manual of operational amplifiers. The setting can be adapted to work...