Search found 3 matches

by george leung
Fri Apr 02, 2004 6:58 am
Forum: General Discussion
Topic: capacitance to voltage circuit needed
Replies: 2
Views: 841

capacitance to voltage circuit needed

Hi,I urgent need a WORKED circuit that can convert capacitance to voltage or freqency,the varying input capacitance may be as little as 10pF. Thanks everybody !!!!!!!!!
by george leung
Thu Apr 01, 2004 5:23 am
Forum: General Discussion
Topic: body detector
Replies: 1
Views: 653

body detector

I have a project to build once my hand approaches the sensor(or metal plate) appro. 10 cm, A LED lights on; at about 8 cm distance, B LED turns on and at about 5 cm, C LED turns on(Total there is 3 LED).Would somebody give me any circuit diagrams??( As I use a MCU to check any frequency change if th...
by george leung
Thu Apr 01, 2004 5:22 am
Forum: General Discussion
Topic: body detector
Replies: 0
Views: 886

body detector

I have a project to build once my hand approaches the sensor(or metal plate) appro. 10 cm, A LED lights on; at about 8 cm distance, B LED turns on and at about 5 cm, C LED turns on(Total there is 3 LED).Would somebody give me any circuit diagrams??( As I use a MCU to check any frequency change if th...