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Type: Posts; User: Enzy

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  1. Replies
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    Closed: designing a basic mic

    Good Day,

    was wondering if hobbyist would make a mic circuit for themselves?

    does a mic require a circuit, is a mic just a speaker that would pass through mixers that have built in amplifiers...
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    Closed: Re: Industrial sensor for factory use

    water proof sensors for industrial application, that looks nice for hobby projects
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    Closed: Industrial sensor for factory use

    Good day,

    Does anyone know of color sensors that are ip68 or ip69 rated I would prefer a cylindrical shape 18mm diameter but if it exists otherwise I would still review.
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    Closed: [Moved]TV remote repair (blue component)

    What's this part does anyone know.

    143364

    [found at imgur .com /gallery /aptJx]

    It has 3 legs, never seen a cap like it the symbol looks like a cap or maybe a crystal.
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    Closed: Re: Tone control circuit critique

    Thats not an option so I added it before the first buffer.

    https://obrazki.elektroda.pl/2070988600_1507140030_thumb.jpg
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    Closed: Re: Tone control circuit critique

    https://obrazki.elektroda.pl/9752410700_1507074848_thumb.jpg

    I added a volume pot after the buffer OPAMP and then I added a gain of 10.

    I added a resistor at the output of the opamp I assume...
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    Closed: Re: Tone control circuit critique

    The amplifiers I build or buy I dont think any of them have a impedance higher than 20k at the input, I would say between 9k ohm and 15k ohm. So that means I am running a high resistive load so I...
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    Closed: Re: Tone control circuit critique

    ok thats right, i guess my head is tougher than I thought. You removed the volume control though any reason?
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    Closed: Re: Tone control circuit critique

    I added the junction dots.

    not sure if my schematic is even correct now, if its wrong it would mean I have no clue where to put the part you mentioned, If I put them somewhere its just a guess....
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    Closed: Re: Tone control circuit critique

    I would build a dual pol. supply, I just used the +/- 12v to represent the supply.
    Ill add it to the circuit soon and ill try to make the addition of the buffer stage, Voltage buffer?

    - - -...
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    Closed: Re: Tone control circuit critique

    https://obrazki.elektroda.pl/7926734600_1506943303_thumb.jpg

    how does this look.
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    Closed: Re: Tone control circuit critique

    https://obrazki.elektroda.pl/7664435900_1506912468_thumb.jpg

    updated version
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    Closed: Re: Tone control circuit critique

    Yes it's grounds for output 2, when I chose a connector in Eagle when I name one the other one gets the same name and a number

    - - - Updated - - -



    I'm working on the extras now, I have...
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    Closed: Tone control circuit critique

    https://obrazki.elektroda.pl/2086606800_1506887596_thumb.jpg

    does this circuit look ok I need it to control the tone of my speakers the signal to this circuit would come from my laptop.
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    Closed: Re: Fet heating up unexpectedly

    I used my multimeter to check the output of the transformer, when its checking duty cycle I don't know if it's showing on percentage or off, my objective is to get it to 50% on and 50% off.

    I...
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    Closed: Re: Fet heating up unexpectedly

    I got a short circuit, I did it in a rush, I'll try again in the next half hour. I'll try a load also.

    Do I need to sign up to upload images here these days?

    - - - Updated - - -

    I made a...
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    Closed: Re: Fet heating up unexpectedly

    I didn't mention that the 10 amp transformer was a 12-0-12v and the 1/2 amp transformer was 6-0-6v and both has a 110/220v output
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    Closed: Re: Fet heating up unexpectedly

    Yes the frequency is low since I only need mains 50hz at the output but why would that be an issue, isnt it a norm for circuits to built with 50hz switching?

    I know that you can use high frequency...
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    Closed: Re: Fet heating up unexpectedly

    OK so if I am using a bjt stage with bc547 and bc557 I would use the 12 to 14v from the battery and that would drive the gate of the fets while the 5v from the arduino would be driving the bjt stage....
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    Closed: Re: Fet heating up unexpectedly

    Sorry about the pic, I seem to be unable to upload the way I used to so I sent a link of the pic from my cloud storage.

    What if I don't have any gate driver ic, is it the same as using a buffer...
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    Closed: Fet heating up unexpectedly

    What I did was I built a 12vdc power supply and used it to power the arduino and I have a truck battery, the connections other wise are the same but the fets get hot in seconds and I release that the...
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    Closed: Re: Clip light circuit for audio signal

    So at R7 and R8 thats where the inputs connect to?
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    Closed: Clip light circuit for audio signal

    I have seen a couple clip light circuits online and tested them out and they don't seem to work, what I had in mind was to build a simple circuit with just 2 leds one to show signal and the other for...
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    Closed: Re: DIY laser printing possiblity

    No that design is very complex but I dont know everything thats why I asked if there was something simple enough to do as a DIY like purchasing a laser and prbably building a circuit to power the...
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    Closed: Re: DIY laser printing possiblity

    I have seen the version that sends ink on to good packaging also I have worked with a laser Labeler that labels plastic with proper adjustment it burns what you program it to write onto bottles.
    ...
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