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    Freq Gen Help! - Need input in Hz instead of period...

    All those XNOR's form the pulse multiplier. I will post a version with a VCO multiplier as well but the multiplying range will be limited. You can pick the one that looks more simple and suit your purpose. If you make R4 adjustable you can trim it for the range you want
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    Freq Gen Help! - Need input in Hz instead of period...

    Maybe it is just a glitch in the system. As long as you are logged in you should be able to view the files.
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    Freq Gen Help! - Need input in Hz instead of period...

    Nick this may work. SW1 gives 2 modes. With SW1 closed you can set the output frequency from (2 MHz/9999)/2 =100.01Hz to (2 MHz/999)/2 = 1001 Hz With SW1 open the output will start at 1000.1 Hz to 10010 Hz (range above multiplied by 10). You can get a much higher frequencies with the switch...
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    C1383 Datasheet

    http://www.ortodoxism.ro/datasheets/panasonic/SJC00104CED.pdf
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    Frequency Generator - 2 Fixed O/P

    This little circuit will produce sine waves with less than 1% distortion over a wide range. Between 20-20Khz distortion is less than 0.8% Needs 8-10Vp-p triangle wave input and will produce a 2Vp-p sine output. Simulation results shown at 1KHz. R5 and R3 must be set for lowest distortion. After...
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    Freq Gen Help! - Need input in Hz instead of period...

    Maybe to do something with rate multipliers. I have done something in the past and must just remember how I did it and find the diagrams. Look at this also http://www.linear.com/pc/downloadDocument.do?id=5084
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    Freq Gen Help! - Need input in Hz instead of period...

    Are you ok with steps of 0.1Hz from 100 Hz to 999.9 Hz and then 1 Hz steps from 1000 to 9999 Hz?
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    Freq Gen Help! - Need input in Hz instead of period...

    I removed the last post after I realized that as you divide by a lower count you will be stepping in larger increments of course! The math can be easily solved with a uP. I will give it a bit more thought and post something that looks workable.
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    Freq Gen Help! - Need input in Hz instead of period...

    One way to do it is make a frequency synth with a range 1000 - 100000 Hz that can be incremented 1 Hz. Then divide the output by 10 to give a range of 100.0 - 10000 This can be under uP control or BCD thumbwheel switches Look at the CD4059 it may just what you are looking for...
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    PIC won't work with capacitors

    What you are saying does not make any sense.
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    7 Segment LED Counter, Need help!

    Connect that to your input pulse you want to count. It won't count on its own. The count pulse must be a logic level input
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    Ft of the transistor

    One should always remember that SPICE type simulators  like the LT assume perfect components. In real life the Q of coils and capacitors at the operating frequency makes a big difference. A more accurate simulation will be with a simulator that use harmonic balance techniques and simulate...
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    Duty Cycle control for square wave inverter

    If we take the same circuit and add some injection locking it is possible to have crystal accurate frequency drive while retaining duty cycle control. In the circuit use  a 1.6384 MHz crystal and leave out U3B for 50 Hz. Use a 3.932 MHz crystal with U3B for 60Hz operation. Both these crystals...
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    URGENT : Please help on 40Khz oscillator

    Do you want to use it for ultrasonic transducer? Transducer will work with square wave as well.
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    Duty Cycle control for square wave inverter

    Many ways. You can also use a small AC transformer as feedback, monitor the rectified DC and together with a opto LDR adjust R1.
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    Duty Cycle control for square wave inverter

    It appears that a lot of members are interested in building simple square wave inverters from diagrams on this forum. Problems with these designs are that the drive wave to the push pull transistors or fets does not have any dead-time or duty-cycle control. Dead time makes sure one side is...
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    Modifying a squarewave inverter for sinewave

    I touched on this subject in another post. Here the basic information to do such a modification. The diagram shows the basic blocks of a squarewave inverter with the two resonating elements (C1, L1) added. The values are load dependant and the values shown works for a 100W load. In the first...
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    Inverter Circuit 12V DC to 230VAC Sine Wave

    A square wave inverter can provide a reasonable sine wave output with a few modifications. This was a common method long ago before fast switching pwm. This was implemented with scr type square wave inverters but can also be applied to transistor or fet types. Basically the switching current is...
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    Why is so hard to mimic the Knight Rider scanner Effect?

    Just leave out the top and bottom leds making it 8 in total
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    Why is so hard to mimic the Knight Rider scanner Effect?

    Possible analog version. RV1 sets amount of smear. RV2 full scale cal. RV3 set the sweep rate.
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