This circuit was found in an English documentation from the 90s. It uses a PLL CMOS 4046 and is powered by a 9 V battery. The sensors are two electrodes that must be held by the person.
November 2016 - Texas Instruments' new TLV8802 nano-power operational amplifiers for wireless...
We found this circuit in a documentation from the 70s. Semiconductors are from the era and can be...
The circuit shown in the figure is a voltage follower, that is, an amplifier with unit gain. The...