Miniature MW Transmitter…[more]
: 
circuit diagram of simple medium wave
transmitter using BF494B. This simple
transmitter have a range of 200 meters.

Miniature FM Transmitters #4…[more]
: 

FM Wireless Mike…[more]
: 
low power frequency modulated transmitter using
tw1o transistors. The circuit works with 9v power
supply.

Wideband OpAmp Capable of MicroPower Operation
…[more]
:  National Semiconductor Application
Notes,24-Oct-2001

Wideband AGC Amplifier As a Differential Amplifier…[more]
:
National Semiconductor Application
Notes,10-Apr-2000 

Temperature Monitor…[more]
: 

Lightning Detectors…[more]
: 

Lightening Detector…[more]
: 

WiFi Can Antenna…[more]
: 

Wein Bridge Oscillator…[more]
: