Let's start by looking at the schematic for one channel, our unit can be used with a standard CKPS, Hall or opto sensors and has the same DIP8 pin out as the Jbperf unit. It does not have an onboard voltage regulator therefore it needs an external 5Vdc supply. The input range we specify is from 0-100V but there are a few limitations due to signal and resistor power ratings. Normally, if the input is less than 12-14mv, the unit will not trigger.cx500tc wrote:Does it work better with single-ended VR's (one leg tied to chassis ground) or fully differential?edc_atl wrote:I have two units that are a drop in replacement to the Jperf unit. Both are based on the LM293....
Can it handle from +/- 30-40 mV to +/- 200 V PP? And under what circumstance(s) does it trigger?
Also, wouldn't LM193 or LM2903 be more appropriate for automotive use given wider temp ranges?
Anyone who needs to get these can get them from OSH Park https://oshpark.com/shared_projects/ux9kpJaAnoisymime wrote:As mentioned on the other thread, mine will definitely need some testing before I could recommend it to anyone.
I hadn't actually meant to finish it off. I sat down last night to simply make sure the schematic was OK, then ended up redoing the board layout at the same time
It was designed with the wrong foot print so a bit of maneuvering is required.Hasse.69 wrote:How are you supposed to get the resistor R10 and R12 to fit , as they are rated 3w....
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