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  1. D

    HIGH Q Transformers and Capacitors

    Hi, I am looking for High Q transformer and capacitor for my AFM(atomic force microscopy) feedback circuit. the capacitor should be in the range of few(0-10) pF s where can I find/buy? DJ
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    Coil winding

    It helps a lot!! Thank you!!
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    Coil winding

    Awesome! Thanks bunches!!
  4. D

    Coil winding

    well I didn't do the calculations myself, someone else handed me over results, i was thinking whether I can use a thinner wire and change the length or turns accordingly(doing calculations again), since this one im using is hard to wind. I am using DC power supply.
  5. D

    Coil winding

    And also can someone help me about how to select a gauge of wire to wind a coil? Lets say I want to create a coil to give constant 1T magnetic field.
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    Coil winding

    Thanks a lot for your reply, could you please suggest me any commercial name or how to buy those shellaq or varnish for this specific use?
  7. D

    Coil winding

    I am winding a coil to get a constant magnetic field for my experiments. I am using a aluminum bobbin and winding insulated copper coil on it, I need ten layers. I was trying to wind it manually but its hard to get neat winding. Can someone suggest me any help with this? someone said I can...
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    Dual polarity power supply for circuits

    Thank you! I think that is the best option for me for my range of applications!!
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    Dual polarity power supply for circuits

    btw, are there any dual polarity power supplies commercially available for this purpose? ideal one should have three outputs wit +,- and ground. and output can vary between +/- 5V to +/- 12V ?
  10. D

    Dual polarity power supply for circuits

    Thanks a lot DJ
  11. D

    Dual polarity power supply for circuits

    Thanks a lot for your replies!! My applications are phase locked loop with LM 565/ NE 565 in FM demodulation mode, and some simple op amp circuits like voltage multipliers etc. I found that voltage regulators, which seems a good option for me to use combining with +12 and -12 outputs of DC-DC...
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    Dual polarity power supply for circuits

    I am looking for a dual polarity (+/-6V) power supply for use with simple circuits. I found these DC to DC converters which have +/- 12V outputs. Do you think I can use that +12 and -12V outputs connected to two potentiometers to regulate it to any voltage below 12? I have attached a...
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    Phase locked loop FM demodulator

    Thanks again Militoy!! (sorry I am going to ask very basic level question) can you please tell me how to measure that DC level. I already built the circuit with NE565. I did connect pin 7 and pin 6 to the scope and thought that is the output, and changed the input frequency. I see a waveform...
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    Phase locked loop FM demodulator

    Thanks a lot for your reply! I just had to continue someone else's project! well i think he found it from some old book! May be i should go for LM565 or some other new one( do you have any recommendations?) However I guess there should be an "expected output and how it should change according...
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    Phase locked loop FM demodulator

    I have made the phase locked loop in FM demodulating mode, using NE/SE565. I am new to electronics and have very little background in making circuits. I plan to use this to detect frequency of a oscillating AFM tip(tuning fork) and to convert it to a voltage signal. However, I am not sure...
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