Ok, thanks for the advice, I shall avoid going digital then. So based on my requirements of a max 3Mhz wave, what sort of slew rate would I need?...
That's exactly what I'm after although I wouldn't know what to look for to make sure the op amp was fast enough. I have some experience using pic...
Hi everyone, I'm currently working on a project using pulsed magnetic fields. I need to produce a really accurate AC sqare wave but can't afford...
"in my many attempts to pull the board free using screwdrivers" Am I the inly one that shivers when I read that!! Desolder desolder desolder!
I have no idea if this product is usefull for this type of project or not but it has an amazing name 'Quantum Tunnelling Composite':...
Is fat more conductive that muscle??? That sounds counter-intuative? I foun d this on the net: "Fat tissue is anhydrous and resists an electrical...
That's interesting because when the output from the circuit was connected to a standard incadescent lamp as well as the neon, the neon only lit...
Hmmm. That sounds like a recipe for disaster! I guess if the leakage is a problem in future I'll just have to use a normal relay instead! At...
Hmmm. That's a bit duff. Fine for the purpose I currently need it for but maybe not for a general purpose switch. Is there any way (Other than...
Hello again, Right, so I've made my first mains circuit: [IMG] The circuit uses a few bit's n bob's to create a stable 5V supply for the...
I'm sure you could easily make a pull to close switch from a wooden clothes peg, some foil and a plastic strip. Foil round the two ends of the peg...
Like this you mean: http://www.quietpc.com/gb-en-gbp/products/components/p7nfoc
The circuit is going to drive four 15W lighting tubes connected through two 30W Ballasts although I will make it as general as possible so that I...
I've just been getting a shopping list together and having a good read about the different components. I'm going to go with the second circuit...
I think the problem is I'm trying to apply DC priciples to an AC circuit. I really don't know much about AC so maybe I need to do a bit more...
Sorry, I think I must be being a bit dense this week. I understand that R4 snd R5 limit the current through the opto and R5 also pulls the gate to...
Thanks for that circuit diagram; that might be an easier route to go down for someone just starting out. Two questions though. I see it has a 1A...
cpemma: I just have one last question which I wondered if you could help me with. I have sourced the correct capacitors having done some reading...
Thanks cpemma! That's answered all my questions nicely and those links have some great info too.. I'll let you know how I get on... If I never...
Bender. Where did you get that 3A from? I checked the spec for the BT137F and it said the RMS is 8A. Am I missing something? Also. Does anyone...
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