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  1. johndeverill

    re-wiring to use batteries???

    Hi all, There is probably a very straightforward answer to this so you will have to excuse my ignorance. I have a PC fan controller that I want to run on batteries. It came with the standard 12v,-ve,-ve,5v molex connector. I connected the 12v wire to a 12v battery pack +ve. I then connected...
  2. johndeverill

    Pressure switch output??

    Hi, I have an SMC digital pressure switch. Basically it has three wires +,- and output. I want a 12v solenoid to activate upon reaching a set pressure. This is being used in a car. I connected it all up to the 12v battery. I then connected the output to a multimeter. All seemed fine, no signal...
  3. johndeverill

    Transducer digital output to analogue

    I have a trnasducer which outputs a 0-330mV +/- digital signal. I want to transform this to a 0-330mV analogue signal. Can I do this via an op-amp and can anyone give any advice on how to do this? Many Thanks John
  4. johndeverill

    Differential inputs and outputs

    Hi, If you have a transducer with differential outputs can this be connected directly to a panel meter with a differential inputs to measure the output voltage of the transducer? Thanks in advance John
  5. johndeverill

    + and - input/output question

    Hi, I've got a quick question and one I'm sure you'll all know........whilst falling about the place laughing!! :) I've got a pressure transducer and an LCD panel meter. The pressure transducer has a + and a - Vout. The LCD display has a + and a - Vin. Both are 12VDC. As I am new to...
  6. johndeverill

    Question about light sensor circ in Projects section

    Hi All, Been looking at the light sensor circuit... http://www.electronics-lab.com/projects/sensors/001/index.html and it looks like it would work for a circuit I am creating. Basically I want to replace the LDR with a 0-100mV 4-pin pressure transducer so that at a set pressure, rather than...
  7. johndeverill

    7 segment pressure gauge help? Modify voltmeter from Projects?

    Hi, Relating to my other post. I have a pressure transducer that outputs 0-100mV for 0-30psi. What I would like to do is create a 7 segment led (well double/triple) figure type that would display 0-30 for 0-100mV being supplied. If anyone could point me in the right direction on this one that...
  8. johndeverill

    Circuit query

    Hi, I wonder if anyone can give any advice on a circuit I want to build. I have a pressure transducer that output 0-100mV for 0-30psi. I have a solenoid that is activated by 12v. I want to control at which pressure the solenoid is activated. The circuit I imagined would be the transducer...
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