- #1
XuFyaN
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in this circuit I've found out the function of every component except R4, R5 and C4,C7 and C8 ...
can anybody please explain the purpose of R4, R5 and C4,C7 and C8 ?
[PLAIN]http://www.2electronic.com/wp-content/uploads/2010/03/cellphone-detector.jpg
also the Capacitor C5 (47pF) is connected across pin 8 and ‘null’ inputs (pin 1) of IC1 for phase compensation and gain control to optimize the frequency response,
what does it mean by phase compensation ? and why the collector is connected with R4 and C7 ?
and what will be the effect on circuit if i remove C5 or C2 from it ??
can anybody please explain the purpose of R4, R5 and C4,C7 and C8 ?
[PLAIN]http://www.2electronic.com/wp-content/uploads/2010/03/cellphone-detector.jpg
also the Capacitor C5 (47pF) is connected across pin 8 and ‘null’ inputs (pin 1) of IC1 for phase compensation and gain control to optimize the frequency response,
what does it mean by phase compensation ? and why the collector is connected with R4 and C7 ?
and what will be the effect on circuit if i remove C5 or C2 from it ??
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