Difference Amplifier OP37 (CB19724E)

Raytheon's used operational amplifier is rare today, but the configuration can be adapted to use modern operational amplifiers.

| Clique na imagem para ampliar |

Control For Model Railroad (CB4354E)
This circuit is from an English magazine of 1974, but can still be assembled with the replacement of...
Voltage to Frequency Converter (CB494)
This circuit, using a unijunction transistor (UJT), converts a voltage applied to the input in a...
Sequential Indicator (CB20342E)
This circuit was found in documentation from the 80s. The circuit did not include resistors from...