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    thyristor vs triac

    I'm posting this mainly for others, but after a few searches and ebay seller listings many people seem confused... While looking for resources to read, most people seem to interchange or use both "triac" and "thyristor" like they are both the same component! And to add to confusion "SCR" well...
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    Your food (Mature/Adult viewing)

    An interesting and powerful documentary, it's feature length and it covers a wide range of issues facing our planet, i gave up eating meat after watching it, i can't no longer be part of that suffering... Eitherway, i'm not trying to convince anyone if anything, i think it's time to see where...
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    role of schottky in sw regs

    I'm still not entirely sure how a schottky diode helps a switching regulator? If the role of the diode is to collapse the magnetic field after the switch is opened, why would a sw/reg fail to operate without one?
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    2amp 5v wallplug psu

    I had a pretty mc driven addressable led strip going in the bathroom, the arduino board shorted across the hand rail (metal) And viola! The bridge rectifier diodes are gone, the 7805 (is the transistor looking one which blew) the power transistor is there as a pass transistor (unsure if it's...
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    Soldering Skills - hilarious!

    OK - word of advice to anyone with his level of understanding, don't... no really this guy is really on another level to everyone else, i'm amazed he never started a fire or blew off his face with molten plastic... But, enjoy, i laughed hard solid watching him solder that LED (what a waste of...
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    removing tuned frequency

    I could just build one, but there's little point wasting my time if someone has the answer... Remove the tank circuit / crystal / vco etc etc and amplify the signal... Will it just be static or will i hear lots of stations?
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    Radio Reciever Circuit

    Hmmmm, i came across a circuit, i'd like to build it with my daughter, no problem, i thought i'd build it with components i already have.. Ic1 = 4007??????? Can't be, i'm thinking of a substitute, lm386 or a couple of dual opamps to get the 4th amplified state... Although, i think a 2 stage...
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    Love chinese translations!

    I'm tempted to email and ask how much i can feel it working? Does your body begin to shake or something? lol i'm not sure how i get the best feeling! ( note, two highlighted black bold lines)
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    Cautionary Tale....

    I was given an old cassette tape, from the 70's/80's anyway opened it up, has 240ac input, 6vdc input, looks good... I found a dry joint, fixed, off it went... fix Next - i see a transformer, ahh relax, risk of death is low! I simply look at the outputs from the transformer, and measure the...
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    Old Electronic components

    Just browsing gumtree looking for bargains and i noticed this, what caught my eye was germanium bin... Anything of any real value in that photo?
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    Electronic Ignorance!

    Electronic Ignorance! I never thought i'd see the day ..... pics attached
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    Nitenol/Heat Pumps etc

    Let's then go into space build a wall to block out light to one side and let the light / heat hit the otherside and drive a turbine 24/7.. However, there's no way of getting the power back, but here on earth the temperature exchange in the air would be a problem.. So how about a vacuum...
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    Alien or Ball Lightning?

    While watching the lightning outside, i was recording it on my phone and out of that video this in particular caught my attention... Now either the cloud lights up from a lightning ball or it's an alien craft recharging it's cells.... What's it to be? :). - Adelaide South Australia!
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    Ground loop filter

    The GLF is there to remove any DC bias it simply removes the annoying hum via a 1:1 audio transformer... I'm no Audio expert, at all lol... but just logically thinking about it, could an optoisolator be up to the same job? Or am I barking up the wrong tree?
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    DC to AC 50hz 12vdc to 12vac

    I came across a water pump which requires AC, i only have DC not even an old transformer i could remove the bridge rectifier from... All the circuits i find invert and step up.. how fussy can a 2 wire 12vac 1.5w motor be?
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    Making a cap fed supply safe!

    I've thought about this for a while now... On the low side, a tvs diode (eg if over 12v it clamps) and a fuse which should protect a user from death? Or what about simply a very low current blow fuse on the 110/240ac .. would these methods not make a capacitor fed power supply safe? Never...
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    replace BTB15 for BTA16?

    As far as i can tell... the btb has 4 quadrants while the bta has 3... It's come from a 240vac washing machine, dead triac What is a quadrant? I'll google it but question remains can my mate have his washing machine back tomorrow or will i need to buy the part in? Thanks! I'm on my phone and...
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    My amplifier!

    Today after 4 years it started a loud buzzing noise on ALL speakers... I instantly replaced all the dodgy caps, it reduced some noise but still annoying... The Fact all the speakers buzzed is interesting, it was sitting still when it happened there is an mc onboard with display thats all...
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    240vac capacitor type?

    I have the image but not where i found it (google image search) I'm not sure what kind of cap should be used on the 240ac out... (the low dc side/circuit works) Film type? Electrolytic? Ceramic? Suggestions? Thanks!
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    pass transistor...

    T1 - t3 How's the pnps regulate the 12V out?
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