Oh, like 10 times all the way from beginning 😀 It just seems that young mind can’t remember everything.
Finally received my boards 😀 Thank you Zm!
Question : is there a reason for using 0r resistor instead of a piece of wire? It’s been puzzling me each time that I saw one of those on a pcboard.
Hubert
Question : is there a reason for using 0r resistor instead of a piece of wire? It’s been puzzling me each time that I saw one of those on a pcboard.
Hubert
nicer 
several reasons , depending of circumstances - with automated insertion , robots like more resistor form factor than wire form factor
when ZM insertion is in case
, I like more that I don't need to think about additional insulation ....... besides, less work than stripping isolated wire etc.
also , when 0R or something else is going to be in 1-pin holders (sockets) it's sorta nicer and easier to manipulate with resistor form factor
several reasons , depending of circumstances - with automated insertion , robots like more resistor form factor than wire form factor
when ZM insertion is in case
, I like more that I don't need to think about additional insulation ....... besides, less work than stripping isolated wire etc.also , when 0R or something else is going to be in 1-pin holders (sockets) it's sorta nicer and easier to manipulate with resistor form factor
nicer
several reasons , depending of circumstances - with automated insertion , robots like more resistor form factor than wire form factor
when ZM insertion is in case
also , when 0R or something else is going to be in 1-pin holders (sockets) it's sorta nicer and easier to manipulate with resistor form factor
Great so since it’s me doing the insertion.. will go for the jumper 😉
Another question : is 1/2w resistor ok for all the 100r in the sissysit? I’m sure it’s ok for r1 but nut sure for the other. Not enough knowledge to compute 🙄
100R resistors - size (them all!!!), mistakes and mishaps
all resistors in Sissy and Babelfish M25 are regular 0207 size , meaning - your plain old good Metal Film resistor ...... nowadays being more like 600mW , not 250mW as in Yore
yup , I got several bags of 100R ones from my Vendor , sized more like 1W (somewhat bigger than 0207) , but I didn' made a fuss about that , simply because they are not too big - right enough to be put through holes without awkward bending of da legz
however , and this is important:
as I'm informed ( twice !) in last few days , it seems I had some strangers in my 100R bags , so please check all 100R buggers you got from me
blame is on me (as always , and I'll blame Papa , as always) , that I didn't catch that and packed them and labeled together ...... but primary blame is on my Vendor - I know that they all were in same plastic bag , prior to opening it and pouring in plastic drawer ......
all resistors in Sissy and Babelfish M25 are regular 0207 size , meaning - your plain old good Metal Film resistor ...... nowadays being more like 600mW , not 250mW as in Yore
yup , I got several bags of 100R ones from my Vendor , sized more like 1W (somewhat bigger than 0207) , but I didn' made a fuss about that , simply because they are not too big - right enough to be put through holes without awkward bending of da legz
however , and this is important:
as I'm informed ( twice !) in last few days , it seems I had some strangers in my 100R bags , so please check all 100R buggers you got from me
blame is on me (as always , and I'll blame Papa , as always) , that I didn't catch that and packed them and labeled together ...... but primary blame is on my Vendor - I know that they all were in same plastic bag , prior to opening it and pouring in plastic drawer ......
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I got one sneaky one...
Not a worry ZM. Thanks for letting us know. Great reminder to measure EVERY resistor before stuffing...
Is it brown, black, black, brown, brown... or brown, brown, black, black brown? Hmmmmm?
I had one sneaky also 🙂 luckily I’ve learned from here to measure everyone.
Btw, VFET’s ordered and paid.
Btw, VFET’s ordered and paid.
Is a 1/2watt resistor enough for r2? I was going to move it up to 200k to decrease the cost of output caps on my preamp, but didn't have any 600mW ones...
I already wrote before - Conrad.de is having nice assortment of Keratherm thingies
it is on other side of Pond to you US guys , but you can't have all
though , SITs in case are sooooo big ( comparing to dissipation) , no need for Keratherm ...... even blanket is good enough
it is on other side of Pond to you US guys , but you can't have all
though , SITs in case are sooooo big ( comparing to dissipation) , no need for Keratherm ...... even blanket is good enough
Use WD40 for drilling and tapping. Take it slow and gentle on tapping, back it out and remove the dreck often. Summary: slow, gentle, lube.
I learned the hard way on re-purposing some Rawson amp chassis by breaking a few taps.
By the way, tap jokes never get old (to me).
I learned the hard way on re-purposing some Rawson amp chassis by breaking a few taps.
By the way, tap jokes never get old (to me).
for M4 - go full depth drill - just eyeball ( with calipers! ) holes to go exactly between fins
tap or no tap , put Allen bolt from fins side (head between fins) , then all necessay bits on SIT side , ending with nut.
that's sexy
) holes to go exactly between finstap or no tap , put Allen bolt from fins side (head between fins) , then all necessay bits on SIT side , ending with nut.
that's sexy
I cut out the R13’s after I saw the big note
Phillips caps installed.
Waiting for Cinemags...
I saw the note about 100R - it looks like a few stray critters made it into my shipment! One on each board. My habit is to measure first one I pull from a bunch. Oops. Easy fix, glad I caught it now. Early is much better.
Phillips caps installed.
Waiting for Cinemags...
I saw the note about 100R - it looks like a few stray critters made it into my shipment! One on each board. My habit is to measure first one I pull from a bunch. Oops. Easy fix, glad I caught it now. Early is much better.
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