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??? 02/25/09 07:31 Modified:   02/25/09 08:34 Read: times	#162802 - sorry the circuit is here Responding to: ???'s previous message

List of 27 messages in thread

Topic	Author	Date
comparator with 8051		01/01/70 00:00
What have you tried?		01/01/70 00:00
description of project		01/01/70 00:00
Look at photo transistor		01/01/70 00:00
further description		01/01/70 00:00
But why 7V ?		01/01/70 00:00
Another project?!		01/01/70 00:00
this is another project		01/01/70 00:00
Not a sinusoidal waveform!		01/01/70 00:00
Well, it can look like a sine...		01/01/70 00:00
still problem with comparator		01/01/70 00:00
Circuit missing		01/01/70 00:00
sorry the circuit is here		01/01/70 00:00
the circuit		01/01/70 00:00
Why bandages, and why 9V VCC?		01/01/70 00:00
VREF is wrong!		01/01/70 00:00
How is Vref 4V ?		01/01/70 00:00
used two diodes at input to MCU		01/01/70 00:00
Doesn't solve the Vref problem!		01/01/70 00:00
kai, help me with comparator		01/01/70 00:00
Give this a try...		01/01/70 00:00
thanks		01/01/70 00:00
thanks, the circuit worked		01/01/70 00:00
LM339 is an open collector		01/01/70 00:00
As Aamir Javaid said about input to 8051.		01/01/70 00:00
Not for an open-collector output!		01/01/70 00:00
Is that tied to +5VDC		01/01/70 00:00

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