betwixt
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1st June 2020, 10:10betwixt replied to a thread Magnet core inductor out of TV set, what is is used for? in Analog Circuit DesignThe article concentrates on amplification using saturated inductors but that is quite different to the way the inductor you have works. It is never...17 replies | 409 view(s)
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31st May 2020, 14:56betwixt replied to a thread [SOLVED] 16F877A : TMR1L/H, can not load values inside with sprintl in MicrocontrollersI 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...4 replies | 235 view(s)
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31st May 2020, 14:45betwixt replied to a thread Magnet core inductor out of TV set, what is is used for? in Analog Circuit DesignThat's just advertising nonsense. They only have two connections so they can't convert anything to something else. The term "S-correction" isn't...17 replies | 409 view(s)
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31st May 2020, 11:47That 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...8 replies | 370 view(s)
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31st May 2020, 11:43betwixt replied to a thread Magnet core inductor out of TV set, what is is used for? in Analog Circuit DesignIt 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...17 replies | 409 view(s)
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31st May 2020, 08:24The 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...8 replies | 370 view(s)
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31st May 2020, 08:16betwixt replied to a thread Magnet core inductor out of TV set, what is is used for? in Analog Circuit DesignI 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...17 replies | 409 view(s)
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30th May 2020, 22:38Try using "T0IE" instead, that is the name used on the data sheet. Brian.8 replies | 370 view(s)
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30th May 2020, 12:02Basic language is horrible - such a non-standard version of it is even worse! I can't work out what "HSEROUT " is supposed to do. The reference...7 replies | 426 view(s)
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29th May 2020, 09:14betwixt replied to a thread cooler master silent prp 500w pc psu in Service Manuals, Requests, Repair TipsThere 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...4 replies | 218 view(s)
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29th May 2020, 09:07I'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...7 replies | 426 view(s)
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28th May 2020, 18:40The HTML to PHP interface says everything after the '?' is passed to the interpreter and the '&' delimits individual parameters. There is nothing...15 replies | 2972 view(s)
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28th May 2020, 14:46I 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...3 replies | 322 view(s)
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28th May 2020, 09:18A 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...6 replies | 354 view(s)
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28th May 2020, 09:04betwixt replied to a thread Yes-Circuit: Misunderstood or malfunction in Hobby Circuits and Small Projects ProblemsBe careful, transistors can be damaged by swapping their connections over and they will only work when wired correctly. What Audioguru said is...4 replies | 276 view(s)
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27th May 2020, 10:41betwixt replied to a thread Yes-Circuit: Misunderstood or malfunction in Hobby Circuits and Small Projects ProblemsYour 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...4 replies | 276 view(s)
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26th May 2020, 22:22I 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...2 replies | 257 view(s)
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26th May 2020, 16:07A 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...3 replies | 322 view(s)
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26th May 2020, 13:23betwixt replied to a thread Circuit don't work in Microcap (555-based class-D) in Hobby Circuits and Small Projects ProblemsDon'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...7 replies | 587 view(s)
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26th May 2020, 08:46betwixt replied to a thread Questions about the components in a circuit (metal piece) in Elementary Electronic QuestionsMost likely a negative ion source. Some 'purifiers' generate small levels of ozone, claiming it makes the air purer although more likely it...2 replies | 184 view(s)
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25th May 2020, 22:24Wouldn't this do the same thing: delay(((rand() % 6) * 1000); Brian.5 replies | 362 view(s)
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24th May 2020, 22:53The 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...7 replies | 469 view(s)
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24th May 2020, 15:37Are 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.6 replies | 336 view(s)
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24th May 2020, 14:16betwixt replied to a thread Measuring voltage drop across a diode in a switching circuit in Elementary Electronic QuestionsSo if you did this: (forgive the crude graphics) +8V ------ Diode ------- (no connection) 0V ---------------------------------------- And you...6 replies | 418 view(s)
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24th May 2020, 09:52betwixt replied to a thread Measuring voltage drop across a diode in a switching circuit in Elementary Electronic QuestionsOnly 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...6 replies | 418 view(s)
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23rd May 2020, 21:33betwixt replied to a thread Variable Resistor clamping and output behaviour for LM2596-ADJ in Power ElectronicsI've never seen a regulator that takes it's feedback from the input voltage! I suspect R36 should go to ground instead of the input. To get the...4 replies | 327 view(s)
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23rd May 2020, 08:41betwixt replied to a thread Will a filter block this waveform? in Hobby Circuits and Small Projects ProblemsI think the bottom line is this: If you want a clean 40MHz signal it is best to generate one as near a sine wave as possible then use minimal...25 replies | 849 view(s)
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23rd May 2020, 08:29That suggests you are becoming part of the signal path. Can you check that the PSU you are using really has a ground connection. There should be one...17 replies | 872 view(s)
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22nd May 2020, 22:51Only that there is no frequency modulation on the carrier. When receiving in CW mode you probably wouldn't hear very low frequencies because of the...17 replies | 872 view(s)
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22nd May 2020, 22:42You are not noticing the resistor symbols on the diagram. The pull-up and pull-down are not direct connections to VDD or VSS, they enable a weak...2 replies | 201 view(s)
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