Found in Texas Instruments documentation from the 90's, this circuit can be used as a shield due its symmetrical power is 5 V. The circuit has offset adjustment and a pass band of 200 kHz.
This two-stage amplifier hás a high impedance input and excelent voltage gain. It can be used as a...
An interesting circuit suggested to indicate when a device is turned off. In the figure we have...
This simple circuit indicates the logic level of a TTL output. The resistors can be 1k and the...