...as a result I decided to take a few snaps ;)
anyone fancy building themselves a boost?
I think "the A class" has a nice ring to it!
Wednesday, April 21, 2010
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Resistors,blisters,and many many cups of Tea!!
About Me
looks simple enough, can we start building up a parts list?
ReplyDeleteso, 2x 2n5089 transistors
is the electrolytic a 10uF?
what do the greenies say on them?
yeah, I can see it now..
ReplyDelete1x 10uf electrolytic
2x 2n5089 transistors.
um, is that 2x brown/black/orange/gold?
those are 10k
and the brown/black/green inbetween is a 1M
yeah the electrolytic is 10uF
ReplyDeletegreenie in the middle
is a "104" so thats .10 uF right?
and the greenie on the end is "503"so that a .05 uF?
still getting the hang of component values!
it's wired with a volume & a contour(gain) pot
volume is Alpha 100k
contour is a Linear 1k with 47uF cap attached between lug 1&2
if you look at the second pic you'll see a violet wire on the far left which goes to the 3rd lug of the vol pot,the black wire in the middle of the board goes to the first lug of the vol pot
thw white wire from the board goes to the 3rd lug of the contour pot
lug 1 of the volume is wired to lug 1 of the contour pot
so...
ReplyDelete1x 10uf electrolytic
2x 2n5089 transistors
2x 10K resistors
1x 1m resistor
1x 100k resistor
(the brown/black/yellow is 100k)
what are the other 2 resistors?? and the green caps??
...nearly there!! :)
104 is 100nF
ReplyDelete503 is 50nF
I only use 'uf' for electro's myself. :)
1x 10uf electrolytic
2x 2n5089 transistors
2x 10K resistors
1x 1m resistor
1x 100k resistor
1x 100nF capacitor
1x 50nF capacitor (seems an odd value?)
...just need the colour codes for those other two resistors chief.
Hmmm it's definitely a 2A503J?
ReplyDeleteok Gepgraphically speaking which two do we need?
there's 3 10k's (one is up beside the 10uF)
ok so the two between the trannie and the cap are
ReplyDeleteorange orange black orange gold
so thats 330k yeah?
the other one is blue grey brown gold
so 680k?
and hey I'm not here to Judge what you get up to "out of office hours" :P
ReplyDeleteblue grey brown is 680ohms (680R)
ReplyDeleteyup, orange orange black orange is 330k
(according to this)
http://www.electronics2000.co.uk/calc/resistor-code-calculator.php
I'll go and finish the pic and email it to you. :)
emailed the finished pic ;)
ReplyDeleteAnd it's bang on,looking online those transistors are really,really cheap too!
ReplyDeleteyeah, nothing expensive in there at all. .. this 47uf cap that's on the contour knob, electrolytic I presume? which lug does the negative leg go to?
ReplyDeleteok, parts list:
ReplyDelete1x 47uf electrolytic
1x 10uf electrolytic
2x 2n5089 transistors
3x 10K resistors
2x 1m resistors
1x 100k resistor
2x 330k resistors
1x 680R resistor
1x 100nF capacitor
1x 50nF capacitor
1x 1k lin pot
1x 100k log pot
correct?
yup that all looks in order
ReplyDeletethe 47uf is electrolytic,the only thing I'm uncertain of is the direction of that cap
I'll report back tomorrow!