This circuit uses a simple power source, having been found in the Philips Databook of 1990. Information on performance is given in the table below.
This circuit is from Motorola documentation on 1976 power devices. SCRs are powered according to...
Assembled with SMD components this spy can be made very small. We found it in an Australian...
We found this circuit in an old documentation. The operational amplifier of the time can be...