This circuit uses amplifiers from the 60's American company Microlin. The circuit can be designed based on modern operational amplifiers.
This circuit was found in National Semiconductor documentation from the 90s. The circuit uses two...
This type of sensor was used in sensitive infrared systems from the 1960s. This circuit was found...
This 4.5 MHz amplifier is suitable for analog TV applications. We found it in a 1967 Philips...