This detector uses an unusual sensor today. The circuit is from an 80s documentation. Its sensitivity is 10 ppm. The transformer has two secondary voltages.
This circuit was found in the July 1988 issue of Radio Electronics magazine. It makes use of an...
Using circuits from Analog Devices, this circuit does not need a symmetrical power supply. It is...
This detector uses an unusual sensor today. The circuit is from an 80s documentation. Its...