Digital Multimeter

speedstar · 20th July 2004, 02:45 AM

Hi, this is the first time I posting. Do any of the guys here have any schematics on digital multimeter? I am doing a school project on it and have no idea how to start. If you have the schematics plus the program( that will be the best!!), could you send it to me at tokulizi@yahoo.com. I am only use it for reference and something for me to start with. Thank you for reading the post and hope to hear form you guys soon.

fr0st · 20th July 2004, 10:34 AM

Do you only need to measure voltage?
Using a pic that has an inbuilt ADC would be an easy option, not highly accurate but it would be enough for a first attempt.
Measuring currect requires a shunt and a ADC (measuring voltage drop).
For resistance I think you need to measure current for a constant voltage source (somthing very small).

Matt

x-pro · 20th July 2004, 02:56 PM

Have a look for instance here:

http://www.maxim-ic.com/quick_view2.cfm/qv_pk/4107

for MAX1497 and MAX1499 chips.

There are some circuits in the datasheets.

Cheers

x-pro

20th July 2004, 02:45 AM	#1
speedstar diyAudio Member Join Date: Jul 2004 Location: Singapore	Digital Multimeter Hi, this is the first time I posting. Do any of the guys here have any schematics on digital multimeter? I am doing a school project on it and have no idea how to start. If you have the schematics plus the program( that will be the best!!), could you send it to me at tokulizi@yahoo.com. I am only use it for reference and something for me to start with. Thank you for reading the post and hope to hear form you guys soon.

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Digital Multimeter recommendation	tempoct	Parts	67	4th November 2007 09:40 PM
need help with getting a digital multimeter	ad_breaker	Parts	14	19th February 2006 02:13 AM
Digital Multimeter accuracy?	tempoct	Parts	6	4th February 2006 04:58 PM
which is good DIgital auto range multimeter.	boxedin	Parts	8	23rd December 2005 03:57 PM
Digital Multimeter Extech?	kaushama	Parts	1	26th October 2005 05:20 PM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

20th July 2004, 10:34 AM	#2
fr0st diyAudio Member Join Date: Dec 2002 Location: Australia	Do you only need to measure voltage? Using a pic that has an inbuilt ADC would be an easy option, not highly accurate but it would be enough for a first attempt. Measuring currect requires a shunt and a ADC (measuring voltage drop). For resistance I think you need to measure current for a constant voltage source (somthing very small). Matt

20th July 2004, 02:56 PM	#3
x-pro diyAudio Member Join Date: Apr 2003 Location: London	Have a look for instance here: http://www.maxim-ic.com/quick_view2.cfm/qv_pk/4107 for MAX1497 and MAX1499 chips. There are some circuits in the datasheets. Cheers x-pro

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)