Through the TTL output this circuit can be used as a shield. The sensor is a platinum probe, and the operational amplifier can be replaced by a modern equivalent, preferably of low voltage.
Found in a 70’s documentation, this circuit can operate with signals up to 10 MHz. The operational...
This circuit is from a 1989 Electronics Handbook. The zener diodes are 9 V x 1 W and the...
Using components from the 70s, this circuit can be implemented with modern equivalent components....