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  1. B

    AC Circuit protection

    Don't play with mains supply as you quite obviously know nothing about it. You will fry yourself at best, at worst, someone else.
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    Why do they use a voltage divider in this instance?

    There is a resistor in the base which has to be accounted for as well..... the 1.4 is the 2 forward biased diode voltage
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    Measuring Diodes in Cct.

    Someone want to shut that gate.......:eek::eek:
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    Need help finding SMA jack | Noob

    Exactly. One would be willing to bet the "gold" is only in the colour, @$17 odd for 20.o_O mmm...there's that common sense popping in again....:)
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    DC motor speed controller

    Whole shebang probably not worth the effort given the low cost of complete pwm dc motor controllers on the internet.
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    Circuit selector

    Why no uC..? Simple enough and chances are there would already be code written out there somewhere to do what you want. If not, learn how to do it. Kids in primary school do it every day Not that difficult with say Arduino Nano for example and plenty of help available on their forum.
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    DC motor speed controller

    So you have had it working then...??? I can only go by the ic chip outline shown clearly on the board.
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    Crop circles. Easy reading

    Someone left the gate open again......... :eek::eek:
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    Circuit selector

    Up down counter. Discrete ic's available. Set to count to 10 and then reset. More information required on what you want to switch exactly to give a more detailed answer. Alternative would be a 10 position rotary switch.:)
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    DC motor speed controller

    Perhaps it will become clearer when the missing IC is found.
  11. B

    EMP attack!

    Bend over and kiss your butt goodbye.....your electronics would be the last thing to be concerned about.
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    Home Electric Fuse Keep Cutting

    Agree.....this is what happens when WHS says there is no such thing as common sense.:rolleyes:
  13. B

    Series Current regulator ? Load and minimum load help

    Used one of those for many years but .......not 6A out of that without some kind of darlington boost transistor. Even then , whopping great heatsink plus power resistors as well.
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    RXB8 receiver

    All sorted...... diagnosis proceedure was remove the board and set up on the workbench with power. (Too much drama down at ground level trying to fix) First approach was to see if the controller would recognise a "learn" of one of the manufacturers remotes...... nothing. Set up the little ds150...
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    Forum Upgrade & Merging with Maker.pro

    Unless there is some obvious reason, wondering why my post from earlier today didn't get shown. I can see it if I look at "my content" but it doen't appear in new posts. No problem for now as I sort of jumped the gun and I sorted it myself, but like I said before, start changing things for no...
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    RXB8 receiver

    Have a Lockmaster sliding gate opener and it up and died suddenly. No storms or power surges .... Motor works fine when driven with power directly. Pulled out the control board and it has a programmed keyfob where one has to use the manufacturers unit. Other visibly identical keyfobs on 433mhz...
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    Why amp is not stable while charging a 3s battery

    What Bertus said...only better....
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    I would like to repair my fridge-freezer. But what's wrong?

    And....once again...Elvis has left the building.
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    6 wires from front hub motor ebike

    Schematic....model number....link to supplier.....photos of what you have....???? Crystal balls do not work these days ....can't get batteries for them.
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    Ideas - re purpose computer metal chassis into something useful

    I used one with a hinged lid, mounted it sideways on the crank grinder I built 20 years ago and all the control relays and circuitry fit inside.
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