This narrowband data receiver is from the Philips Databook of 1990. The circuit is powered by 5 V and N1 has 3.21 turns, N2 1 turns with Q = 16.
September 2016 - It can be purchased from Mouser Electornics the iW1818 of Dialog Semiconductor, a...
This power source was found in a 1969’ Electronics World. The version is too sophisticated by the current it...
This circuit is from an old Popular Electronics, but it can be easily implemented nowadays, even...