This circuit makes use of a low impedance microphone. The relay is according to the supply voltage which can be between 9 and 15 V. The operational gain is approximately 100.
This circuit makes use of a specific 80's component and was found in an American manual of the...
We found this circuit in Motorola's 1993 Linear Interface ICs. The power supply does not have to...
May 2017 - Mouser Electronics already has for sale the new Littelfuse SP2555NUTG diode arrays for...