Found in Datel's documentation from the 1980s, this circuit makes use of the company's operational amplifiers. The circuit can be implemented with any modern equivalent operational.
Found in old documentation, this circuit uses components that are still common on the market. The...
This circuit activates a relay by activating one of a series of optical sensors that can be...
We found this circuit in a 1996 publication. Equivalent components can be tried, especially in the...