Switched integrator (CB8871E)

Found in a1968’s Burr Brown documentation, this shield uses an integrated circuit from that time, which is uncommon today.

Magnetic Transducer Detector (CB15914E)
This circuit, suggested by Philips Components, uses as a base a voltage comparator of the type...
Wire Finder (CB21301E)
Found in an Electronic Hobbyist Handbook from the 1990s, this circuit is intended to apply a...
Current to Voltage Converter (CB15727E)
The presented circuit provides an output voltage proportional to the input current, according to...