Switched integrator (CB8871E)

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

FM Transmitter with Auxiliary Input (CB17254E)
This circuit is from 2001 documentation and consists of a small FM transmitter with two inputs, one...
40 W Amplifier (CB16286E)
This amplifier, of excellent quality, provides a power of 40 W IHF, or 22 W RMS, in a load of 8...
5 V x 2 A Supply Regulator (CB19000E)
The input of this regulator can be between 7 and 12 V and the output is 5 V. The circuit is from...