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  1. AnalogKid

    Amplifier project

    PE and the Tiger series of amps completely ruled the 70's. Glory Days. ak
  2. AnalogKid

    Voltage Regulator Help

    If you are sure that the output voltge *always* will be less than the input voltage, there is a variation of a linear voltage regulator called an LDO - Low Drop Out. While these usually are used in applications of lower current, there is nothing preventing an LDO with a 10 A output and 0.5 V...
  3. AnalogKid

    IC's temperature ratings

    And it's not just for the IC's. The pile of specs for circular connectors (38999, 5015, etc.) is over 1600 pages. ak
  4. AnalogKid

    Circuit for the power Amplifier

    His purpose is a wideband jammer. His thread was closed on another forum. ak
  5. AnalogKid

    Gain of operational amplifier...

    @hevans1944, I see what you mean. BTW, that sounds more like the definition of group delay or propagation delay. ak
  6. AnalogKid

    Signals in circuit

    What do you think the circuit is supposed to do? Is this homework? ak
  7. AnalogKid

    Gain of operational amplifier...

    That is not my understanding of what hysteresis is. All digital and saturated analog circuits - opamps, comparators, diff amps, inamps, logic gates, single-ended inputs, differential inputs, whatever - are linear amplifiers that are overdriven to output saturation. (Exception: ECL) There are...
  8. AnalogKid

    Gain of operational amplifier...

    OKaaaayyy... True, but slew rate and intentional circuit hysteresis are not related. There is no direct relationship between an opamp's output stage slew rate and it's input stage gain and performance as a level detector. In a circuit where an opamp is acting as a comparator (no feedback of...
  9. AnalogKid

    Gain of operational amplifier...

    Brain fade, forgot about the ground connection on the left side of the coil. ak
  10. AnalogKid

    Gain of operational amplifier...

    No. There is no hysteresis in the post #1 schematic. ak
  11. AnalogKid

    DIY voltage Regulator

    A fully assembled and tested buck regulator module that can handle a 60 V input and produce over 500 mA at 12 V is less than $3 US on ebay, with free shipping...
  12. AnalogKid

    How do i know how many volts my circuit needs?

    Yes. ak
  13. AnalogKid

    Amplifier project

    Me, too, both professionally and personal. That's quite a beast. Schematic? ak
  14. AnalogKid

    Gain of operational amplifier...

    As above, for low values of R2, the circuit behavior is that of a comparator with a 10 K load, not a linear amplifier. We still do not know the input signal voltage range at the non-inv input. ak
  15. AnalogKid

    Gain of operational amplifier...

    0.3 mA is less than 1% of the short circuit current limit. ak
  16. AnalogKid

    Detecting an active low signal

    Some people (and some corporations) do not like crimping two wires into one connector contact. ak
  17. AnalogKid

    Wireless charger project - diagram

    This looks like homework. The way this goes is first you show us *your* work, then we critique it. Note (because I'm sure someone will climb all over this) - the LM324 *will not work* in this application. It is too slow. That is, it's output slew rate is not fast enough to produce a 1 MHz...
  18. AnalogKid

    Thermal fuse help needed..

    Assuming your device is powered by plugging it into the wall or some other connection to the mains, is there anything inside that would lead you to believe that the fuse is in a DC circuit rather than an AC circuit? Photos would help here. 2 A is the max current it can carry continuously, at...
  19. AnalogKid

    Gain of operational amplifier...

    If R2 is decreased to zero, the circuit becomes a comparator, not a linear amplifier. To determine if the opamp has enough bandwidth for your application: 1. Determine the highest frequency of interest. This might be a higher harmonic of a complex signal waveform. 2. Determine the maximum...
  20. AnalogKid

    A small timer required.

    Do you want to a) electronically push the button once every 4 hours, or b) turn off and turn on the entire unit once every 4 hours. For either one, you can get a programmable timer at WalMart, and have it turn a relay on and off. There is a bit more to it, but that is the basics. ak
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