Mhz Posted January 9, 2005 Report Share Posted January 9, 2005 Hi, I'm Interested In designing a circuit that is capable of reading (Counting) voltage presence for a dc ground reference that will be shuting off and on... I dont believe the lowest point of voltage reference will fall to zero, but anywhere from 100 millivolts to 12v.any Reference or Ideas of such a circuit? Thanks for any help. Quote Link to comment Share on other sites More sharing options...
ante Posted January 10, 2005 Report Share Posted January 10, 2005 Hi Mhz,More details please. Like current and if you need it to be separated (isolated) from the supervised object and so on Quote Link to comment Share on other sites More sharing options...
Mhz Posted January 10, 2005 Author Report Share Posted January 10, 2005 Hello Ante, once again.. :) .. Yes, the circuit tester I am interested in designing will be used for checking Pulse-Type Voltage from an Automotive Ignition Control Module.. I do understand that it's easier to go buy one, but I want to design My own...My knowledge is that The Voltage that sends the Signal to the Coil Pack from the Module, is a Negative Voltage. I am designing this project to check for faulty Control modules (Pulsating or Not). As far as Amperage Draw, I belive for these 'Auto' devices, it should possibly be anywhere from 2 amps and up.. I'll have to measure and check.. Anyhow, thanks for the response and let me know of any help you can provide, thanks... Quote Link to comment Share on other sites More sharing options...
Mhz Posted January 11, 2005 Author Report Share Posted January 11, 2005 by the way Ante, or any other helper, the circuit doesn't have to be a counter, but anything that will allow me to capture the results without me looking at it. That is why I suggested a Counter..Sometimes it's hard to monitor the tester while cranking the engine etc... Quote Link to comment Share on other sites More sharing options...
ante Posted January 11, 2005 Report Share Posted January 11, 2005 Hi Mhz,If I understand this, you just what to know if there is a pulsetrain or not? You don Quote Link to comment Share on other sites More sharing options...
Mhz Posted January 11, 2005 Author Report Share Posted January 11, 2005 Yes Ante, that's correct.. Just something to verify the Pulstrain of the Module, and preferably a circuit that will hold the data to show me that there is a Pulse comming from the Module. Quote Link to comment Share on other sites More sharing options...
ante Posted January 11, 2005 Report Share Posted January 11, 2005 Mhz,Maybe you could use something like this: http://www.uoguelph.ca/~antoon/circ/probe2.htm or if you can Quote Link to comment Share on other sites More sharing options...
Mhz Posted January 11, 2005 Author Report Share Posted January 11, 2005 Great References Ante, Now I will have to somehow convert the actual Module unstable voltages and current into a definable output for the Circuits You Referenced me to, since they are sensitive digital type circuits... But This IS GREAT! :) Thanks Alot Once Again... 8) Quote Link to comment Share on other sites More sharing options...
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