auto_turret
New Member
Hello, I am brand new to this board my name is Keith I'm from the Detroit area. My problem is, I need to create a switch box that will allow me to read several resistances with an ohm meter. What I'm testing is several connections on hundreds (possibly thousands) transmission control units for the correct ohm values. Basically we're looking for shorts. I drew up the schematic with several 4016 bi-lateral switches to switch the pins together. But now I need to have the ohm meter connect to these one by one and I want to use an IC for this tester. I'm just not sure on what the correct IC would be. I'm thinking it's an analog multiplexer that would do the job. I know that a digital multiplexer will just give me an on-off status.
Guess my question boils down to, would an analog multiplexer pass the connection untouched along so I can read the ohm value? Any help would be much appreciated!
Reason I'm doing this is because I'm a lowly parts sorter trying to break into the electronics field, and if I can build this and show it to the vendor maybe they'll offer me a job! We've already received testers with dial switches but thats boring and it's lame to sit there and click these dials all day. I want to accomplish this with a single push button and a reset button and a 7 seg display to indicate which position i'm at. Got all that down pat just not sure about the analog multiplexer part since I've never worked with one.
Edit: and I'm using 4017 decade counters to activate the bilateral switches one by one. Funny coincidence how those 2 IC's are right next to each other
(4016, 4017)
Edit again: Sorry about all the edits but it's more like 33 connections .. 16 pins but 33 connections to be tested.
Guess my question boils down to, would an analog multiplexer pass the connection untouched along so I can read the ohm value? Any help would be much appreciated!
Reason I'm doing this is because I'm a lowly parts sorter trying to break into the electronics field, and if I can build this and show it to the vendor maybe they'll offer me a job! We've already received testers with dial switches but thats boring and it's lame to sit there and click these dials all day. I want to accomplish this with a single push button and a reset button and a 7 seg display to indicate which position i'm at. Got all that down pat just not sure about the analog multiplexer part since I've never worked with one.
Edit: and I'm using 4017 decade counters to activate the bilateral switches one by one. Funny coincidence how those 2 IC's are right next to each other
Edit again: Sorry about all the edits but it's more like 33 connections .. 16 pins but 33 connections to be tested.
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