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  1. Closed: Re: Magnet core inductor out of TV set, what is is used for?

    The article concentrates on amplification using saturated inductors but that is quite different to the way the inductor you have works. It is never used in saturation, the permanent magnet works to...
  2. [SOLVED]Closed: Re: 16F877A : TMR1L/H, can not load values inside with sprintl

    I don't use MicroC but I suspect your problem is to do with the way you load 'p1' with values in the while() loop but in the ISR you use 'p1' and 'p1+1' with no assurance that p1+1 holds the other...
  3. Closed: Re: Magnet core inductor out of TV set, what is is used for?

    That's just advertising nonsense. They only have two connections so they can't convert anything to something else.

    The term "S-correction" isn't a property of the inductor itself, it describes...
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    [SOLVED]Closed: Re: Help for Assembler 12F675

    That PIC has a built-in ADC so if you can spare the input pin, wire the potentiometer across VSS and VDD with the wiper going to the ADC input. Then use the ADC module to read the voltage (the ADC...
  5. Closed: Re: Magnet core inductor out of TV set, what is is used for?

    It has very little use I'm afraid. It is just an inductor with a 'kink' in its hysteresis curve as the magnet is overpowered. It is designed to work at high current (several Amps) but only at low...
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    [SOLVED]Closed: Re: Help for Assembler 12F675

    The message is just a warning about the simulation, it doesn't mean there is a problem with the code.
    The OSCCAL register applies a small offset to the internal oscillator calibration but the exact...
  7. Closed: Re: Magnet core inductor out of TV set, what is is used for?

    I think the inductor referred to may be part of the horizontal linearity circuits. They were mounted on the main circuit board, not the CRT. If I have the right part, they were typically about 30mm...
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    [SOLVED]Closed: Re: Help for Assembler 12F675

    Try using "T0IE" instead, that is the name used on the data sheet.

    Brian.
  9. [PIC]Closed: Re: Question About Crc8 Picbasic Implementation

    Basic language is horrible - such a non-standard version of it is even worse!

    I can't work out what "HSEROUT [HEX2 CRC_IN]" is supposed to do. The reference manual says:So what is 'HEX2' and what...
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    Closed: Re: cooler master silent prp 500w pc psu

    There is a "prp 500W" which is a power inverter and there is a "pro 500w" which is a modular PC power supply. I'm guessing from the title this should be "pro" not "prp".

    My first step on all...
  11. [PIC]Closed: Re: Question About Crc8 Picbasic Implementation

    I'm not sure I understand the question.

    The algorithm is the same regardless of the format the digits are presented. I think this is written in Oshonsoft BASIC so the only reference with a '$'...
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    Closed: Re: E-mails about thread replies

    The HTML to PHP interface says everything after the '?' is passed to the interpreter and the '&' delimits individual parameters. There is nothing that makes any specific word do anything.

    However,...
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    Closed: Re: water tornado device

    I looked at the link, it very clearly shows a white 'strirrer' in the bottom of the flask and it even 'explodes' the base contents where you can see the motor.

    So yes, you do need to place the...
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    Closed: Re: Mini SCART TV, does it exist?

    A far better alternative would be to buy a Raspberry Pi, the cost is almost the same and you get a more modern HDMI connection for A/V as well as composite and audio, an Ethernet port, USB for...
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    Closed: Re: Yes-Circuit: Misunderstood or malfunction

    Be careful, transistors can be damaged by swapping their connections over and they will only work when wired correctly.

    What Audioguru said is quite right, did these transistors come pre-wired on...
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    Closed: Re: Yes-Circuit: Misunderstood or malfunction

    Your language skills are perfect!

    From what I can see, you have built it correctly and the values look good.

    If pressing the button makes the LED light up it means T1 is working. What should...
  17. Closed: Re: Use physical button to trigger an IR sensor

    I think we need to see how it connects to your circuit. The answer to your problem depends on whether the sensor side is connected so it lifts the output signal high or whether it pulls it low. It...
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    Closed: Re: water tornado device

    A small disk with a fin or a small propeller sit in the bottom of the glass. In the base there is a small motor spinning a magnet around. The rotating magnetic field drags the disk around and stirs...
  19. Closed: Re: Circuit don't work in Microcap (555-based class-D)

    Don't expect particularly good results from that circuit. In astable mode the control pin can change the frequency as much as the pulse width and the output is not AC coupled so it shouldn't be used...
  20. Closed: Re: Questions about the components in a circuit (metal piece)

    Most likely a negative ion source.

    Some 'purifiers' generate small levels of ozone, claiming it makes the air purer although more likely it produces a slight scent to make people think it does...
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    Closed: Re: Random Time Delay in C

    Wouldn't this do the same thing:
    delay(((rand() % 6) * 1000);

    Brian.
  22. [SOLVED]Closed: Re: PIC24FJ256GB210 Controlling Output Voltage

    The resistor and LED seem OK but what is the supply voltage (VDD) to the PIC. It needs to be a little higher than the LED needs to allow for some drop in the internal circuits. The maximum...
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    Closed: Re: What does 1

    Are you sure?
    1 << (twint) shifts a '1' left by '(twint)' times, it creates a value but does it change the contents of a register?

    Brian.
  24. Closed: Re: Measuring voltage drop across a diode in a switching circuit

    So if you did this: (forgive the crude graphics)
    +8V ------ Diode ------- (no connection)
    0V ----------------------------------------
    And you place a meter across the diode you would expect to see...
  25. Closed: Re: Measuring voltage drop across a diode in a switching circuit

    Only when the diode is conducting and passing enough current. If the voltage can't drop below 7.7V after the diodes it probably means there is already that much from storage in the capacitors or...
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