Institute Newton C. Braga

Circuit Bench

Stereo balance test (CB9106E)
This circuit monitors the output of a stereo amplifier, checking the balance and balance between...
2 MHz comparator (CB6500E)
This circuit was obtained from an Electronics Design of 1964. The circuit makes use of tunnel...
Photo relay with LDR CIR23521S CB23821E (CB23821E)
I discovered this circuit in Radio Electronics magazine in 1962. The circuit drives a special...