Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!usc!zaphod.mps.ohio-state.edu!unix.cis.pitt.edu!fmgst
From: fmgst@unix.cis.pitt.edu (Filip Gieszczykiewicz)
Newsgroups: sci.electronics
Subject: Freq. and Cap. meter questions
Keywords: digital meter.
Message-ID: <33045@unix.cis.pitt.edu>
Date: 29 Aug 90 13:25:26 GMT
Reply-To: fmgst@unix.cis.pitt.edu (Filip Gieszczykiewicz)
Followup-To: sci.electronics
Organization: The Last Jedi
Lines: 38


	Greetings. I got my simple (+/-1999 mV) meter to work
	just like the "real thing"

	I have 0-500 VAC, 1-500 VDC, 0-20Kohm (no amperes, that's
	what I use my analog for... :-)

	Now, I would like to add a frequency counter and, perhaps,
	a crude (key word) capacitance meter.

	Is there a chip or hybrid that will convert frequency
	(hopefully linear) to volts (or ohms)? It can be made
	of discrete components as long as the price is not
	"hubble" (hey, new word for "astronomical" ;-)

	Also, the capacitance meter seems to be a "can of worms"
	if one is to make one from discrete components - is that
	true? I would not like to buy a chip that measures capacitance
	but drives a SEPERATE display. On the other hand, if that's
	the way to go, I'll take it.


	Finally, I would like some sort of overvoltage protection
	for my meter. Short circuit would be nice but I'm not sure
	if it's needed.

	Take care. I will summarize and make public whatever I 
	accumulate. (Please use e-mail)

	P.S. By the way, this is going into a 19" rack! Size of
	your circuit is no problem! ;-) Power is neither - I have 
	+/- 20VDC @ 5A and +/- 5VDC @ 10A (No, I won't take tube
	circuits - I'm not that crazy... :-)
-- 
_______________________________________________________________________________
"The Force will be with you, always." It _is_ with me and has been for 10 years
Filip Gieszczykiewicz    "A man without a dream is like a fish without water."
FMGST@PITTVMS  or  fmgst@unix.cis.pitt.edu "My ideas. ALL MINE!!"