Mario Arpino
New Member
I'm working on a project at the moment that requires a low cost linear motion potentiometer with a linear displacement of about 10mm giving 0>10k. The problem I'm coming across is that manufacturer's of these items have a very different view of what is low cost, as their market is typically aerospace industries and the like. The cheapest I've found so far was about $60 and I need to get the price down to below $10. Precision and linearity are not critical for my application but a high duty cycle is required (>1000,000 full cycles and 50,000,000 dithers). I found one with a duty cycle of >100,000,000 but the price is over $150!!
Would it be possible to achieve the same result with an electronic circuit measuring capacitance of a moving rod? This way the the moving part would be non contact and would give me the duty cycle and reliability I'm looking for. Would it also be possible to set jumpers on the circuit board to change the full scale linear displacement to different values. e.g. 0>1k, 0>2k, 0>5k, 0>10k ?
Sorry if this seems a little vague, I'm good with mechanical bits but not really an electronics person. Can anyone out there help me?
Mario
Would it be possible to achieve the same result with an electronic circuit measuring capacitance of a moving rod? This way the the moving part would be non contact and would give me the duty cycle and reliability I'm looking for. Would it also be possible to set jumpers on the circuit board to change the full scale linear displacement to different values. e.g. 0>1k, 0>2k, 0>5k, 0>10k ?
Sorry if this seems a little vague, I'm good with mechanical bits but not really an electronics person. Can anyone out there help me?
Mario