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Type: Posts; User: lerameur

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  1. Replies
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    741

    Closed: Re: Chossing MOsfet for boost converter

    I am going to redesign according to tl494 datasheet.
  2. Replies
    12
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    741

    Closed: Re: Chossing MOsfet for boost converter

    Hello

    I am posting a circuit, the output is at 24 v and about 15 amp so about 360 watt power output.
    Now I have a load of 1050 watt same voltage. I thought of just trippling the mosfets and ...
  3. Replies
    12
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    741

    Closed: Chossing MOsfet for boost converter

    Hello everyone,

    I have a circuit with one 150watt mosfet
    If I want to double the current load, is it better to parallel the mosfet ?
    OR use a 300watt rated mosfet ?

    Also dont get that a...
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    289

    Closed: Re: Programming the LTC6904

    OK,
    thats not the way I understood it from your text:
    If you look at page 11 at the bottom most of the page, you will see a 29 bit address scheme.
    the slave address, I thought we needed to...
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    Closed: Re: Programming the LTC6904

    hello,

    Exactly... but what is not told, and I would assume... that we have to do that individually and THEN but both LTC6904 on the same line circuit. SO are we programming an 'semi permanent'...
  6. Replies
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    Closed: Programming the LTC6904

    Hello,

    The datasheet of the LTC6904 square wave generator says:
    Slave AddressThe LTC6904 can respond to one of two 7-bit addresses. The first 6 bits (MSBs) have been factory programmed to...
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    578

    Closed: Re: Fast rise time Mosfet

    I heard the RF mosfet was not the best for square wave, as I need full saturation or off.
  8. Replies
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    578

    Closed: Re: Fast rise time Mosfet

    I will be using the mosfet driver ISL55110... driven by a picchip
    I am going to switch 12v and .2 amp max.
  9. Replies
    7
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    578

    Closed: Fast rise time Mosfet

    Hello
    I am seeking a 1 ns rise time mosfet.
    I only found these two but they are about 4ns TPH3206 and SD210
    40v Vds and .5A is what I need but higher rated voltage does not matter.
    1ns rise...
  10. Closed: Re: Searcking for an IC with fast rise time low frequency

    I am not sure about the load capacitive value, NOt important for now, I can increase the current if I need to. I was thinking about an opamp oscollator (multivibrator), and add a schmitt trigger on...
  11. Closed: Searcking for an IC with fast rise time low frequency

    Hello,

    I am looking for an IC that can oscillate between (5 to 20hz) with a 1ns rise time, so square wave. It can me schmitt trigger , opamp etc.. does not really matter. 5v output
    thanks in...
  12. Replies
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    1,131

    Closed: Re: Rise time issue- contrast from the datasheet

    I adjusted my probe, working good now. The rise time are very close to the datasheet specs. Very happy. I am aware that the circuit can be improved.
    For the probes, what probe do you recommend at a...
  13. Replies
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    1,131

    Closed: Re: Rise time issue- contrast from the datasheet

    Hello all,

    I adjusted my propde to 10x and now getting proper rise time. Thats for all your comments.
    I also tried an older probe (pp-150) on channel #2 and I anm getting similar rise time but...
  14. Replies
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    1,131

    Closed: Re: Rise time issue- contrast from the datasheet

    Hello,

    I was only able to obtained the exacte rise time of 100ns from a ne555 chip.
    I joined two picture of my circuit (LTC6904) and my oscilloscope.
    153390153391

    Ken
  15. Replies
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    1,131

    Closed: Re: Rise time issue- contrast from the datasheet

    Hello,

    Here I am posting 2 pictures. My oscilloscope and the LTC6904, by default this chip output about 1khz
    I did get 100ns rise time for a ne555 and thats what the datasheet mentionned. Thats...
  16. Replies
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    1,131

    Closed: Rise time issue- contrast from the datasheet

    Hello,

    I purchased a few chips to measure the rise time of a square wave.
    What I am finding out is that the datasheet shows a very fast rise time, but I cannot event get close to their rise time....
  17. Closed: Re: dtmf problem!!

    why do you need an inverting amp, how about a non inverting one ?

    ken
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