Second order high pass filter (CB7522E)

Using a 741 op amp with symmetrical source, this circuit was found in a 1982 documentation. The configuration applies to other ops.

Triac Shield (CB4591E)
For trigger high power loads connected to the power grid, nothing better than using a TRIAC. For...
Microchip’s Wi-Fi® SDK with Apple HomeKit Support Now Available
Fully-Certified Software Development Kit Leverages Hardware-Based Calculations to Create Fast,...
Reference Voltage Amplifier (CB4906E)
This circuit is from an old manual of operational amplifiers. The setting can be adapted to work...