hi, i am new to electronics and just have a few questions regarding components.
1) im in the process of making a overdrive pedal and ive bought the required BS250 transistors. the manufacturer says they are nMOS, what does this mean? and how do i find the base, collector and emitter as i havent been told where they are?
2) i know i connect the input and output wires to the tip of the guitar lead but there do i connect the shaft part? (earth maybe?????) and where don the earth symbols connect to? i was thinking it may all connect to the negative part of the battery but im confused!
3)is it easy to blow a transistor because ive been trying to find the base etc by trial and error (swapping the connecting wires around) and how would i check if it was blown?
4) can anyone give a a link to an easy to build stompbox ... cos i know once ive completed one and it works ill be happy n want to build more!
thanks
kevin
You['ll be able to find stuff you can use in all the blue print at the top of page...try them out...FAQ...GEO etc. Root around there's really a ton of stuff [all of it is there but You have to sort it out] all concise and prepared for your learning pleasures!!!
DMM's go longways...best 40 I ever spent !
LPB1 or similar parts count booster is a great place to start.
I use a boost like all the time. I have an LPB on my pedal board.
Look in the beginners forum for info on booster building...
Build another and have yer basic 2 tranny boost/OD.
It is recommended that you start with something simple...take your time and make sure the parts values are correct [I measure most all resistors with a DMM before soldering them in].
Plan a few moves ahead, [I would imagine you'reuseing perfboard], and look at each nodes connectionS. node is where multiple component leads connect.
Check out Small Bears Tweak-O or other beginner project with text and pictorials...
I Wish You a Happy Build !!!
thanks :)
MOS would mean they are FETs, MOSFETS, I think you started another topic about FETs ;)
Ground is also referred to as 'common' because all these points connect together, and in most cases to the negative battery terminal :) If you apply 9v without a current limiting resistor to a transistor, yes you're probably running the risk of blowing it. If you are just putting it into a socket of an existing circuit it should be fine.
You can find the datasheet for the BS250 here:
http://www.vishay.com/docs/70209/70209.pdf
usually a quick google search will bring this up...