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Recent content by dincay

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    Multi Channel, Low Output Power, Programmable Power Supply

    I am looking for multi-channel programmable power supply. I know there are quad power suppllies, but I am looking for 8 channels or more. The good thing is I don't need lots of watts. 0.1W per channel rated power is more than enough for me. GPIB control is preferred but not a must. Considering...
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    Why cant we use lower refractive index core material in optical fiber

    If the optical fiber's RI is lower than clad's RI, than is it possible the light to stay in fiber? I mean, if RI_clad is higher, than when the light beam hits the optical fibers surface, it will refract instead of reflect.
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    RZ & NRZ Moduation in Optical fiber

    RZ modulation is used for long reach fiber communications, because light disperses in fiber and RZ modulation provides larger headroom for dispersion. However RZ modulation requires more bandwidth because actual pulse width is shorter than one period of data. NRZ is classic on-off modulation. It...
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    [SOLVED] Looking for a Wideband 1:1 Balun

    Yes it suits me. Thanks.
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    [SOLVED] Looking for a Wideband 1:1 Balun

    This one **broken link removed** Is there a problem with it?
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    [SOLVED] Looking for a Wideband 1:1 Balun

    Thanks FvM. In picoseconds web site it is stated they can be used bi-directional as you said. Macom has wideband baluns but up-to 3 GHz only.
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    [SOLVED] Looking for a Wideband 1:1 Balun

    Thanks mister_rf but this balun has SE input differential output. I need diff input SE output. In datasheet the input and output ports are explicitly marked. So I don't think I can use it in a reverse way.
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    [SOLVED] Looking for a Wideband 1:1 Balun

    I am looking for differential input - single ended output 1:1 balun. Connectors are not so important, it can be SMT. And of course it has to have 50 Ohm input and 50 Ohm output impedances.
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    [SOLVED] Looking for a Wideband 1:1 Balun

    I am looking for a 0.5 - 6 GHz 1:1 balun for converting differential to single ended. I checked digikey, mouser and farnell, however I cannot find any suitable part yet. Do you know a suitable balun?
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    VGA Controller State Machine

    You can use frequency divider. Write a free running counter and use the LSB of it. It has half the frequency of the clock.
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    phase difference between the output of a T Flip flop and and clock applied to it

    I think you are asking the the time between clock rising edge to output toggle. If clock rising edge occurs at t=t_0, output toggles at time t=t_0+t_delay. What is t_delay? It really depends on the model of TFF you are using. If you are using a discrete IC, check the datasheet, if you are using...
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    Use of 'inout' ports in Verilog

    I am not sure but maybe the same thing can be used in testbenches too.
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    Use of 'inout' ports in Verilog

    You can use this piece of code I think. data_dir determines which port is output and whick port is input. You can write data to bus1reg or bus2reg and read data from bus1 or bus2. For example if bus1 and bus2 are connected to each other and if data_dir=1, then bus1 is output and bus2 is input...
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    Question about Spartan 3E board.

    Any one week project and most of one month projects will fit in 500K gate.
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    VGA colors with Spartan 3E

    Why only 2 bits are assigned for blue whereas red and green has 3 bits?

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