This detector with ultra-low deviation was found in an American documentation from the 90s. Operational amplifiers are from that time. The power supply must be symmetrical.
Electronics Now from the 90's suggests this pulse conditioner circuit for use in tachometers. The...
This TTL circuit can be used as a shield, controlled by one of the inverters. The circuit must be...
This amplifier, from Motorola's Linear Interface ICs of 1993, is indicated for the excitation of...