SIMPLICITY = RELIABILITY, USE YOUR 2030/2050 TO DRIVE A PAIR OF TIP35/36'Cs.
Run a heavy current transformer as found in nad or pioneer retro, A FEW 10000UF CAPS IN THE PSU and blow the place apart, guaranteed to rearrange your ornaments.
Use a thermal switch to pull the fan in at 60-80 degrees and away you go.
I HAVE PUSHED THE ST MICRO 35/36C'S WAY OVER 100V AND THEY ARE STILL GOING
Run a heavy current transformer as found in nad or pioneer retro, A FEW 10000UF CAPS IN THE PSU and blow the place apart, guaranteed to rearrange your ornaments.
Use a thermal switch to pull the fan in at 60-80 degrees and away you go.
I HAVE PUSHED THE ST MICRO 35/36C'S WAY OVER 100V AND THEY ARE STILL GOING
Judging from some of the Pictures, and previous mouser BOM links; it looks like like some people used 7mm resistor length, and just bend tighter to the body. I've reached another point of indecision. I guess I'll make a list of the ones I can't find in a smaller length, and see where I stand.
top pic in post1984
Resistor R51 looks like a 600mW in 0.4" pad pitch
R40 looks like the bigger 500mW in a 0.5" or 0.6" pad pitch.
R13 is a tiny resistor in the standard pad pitch of 0.4"
A 6.5mm, or 6.8mm, body length fits comfortably into 0.4" (10.16mm) pad pitch.
Check you pad pitch for the standard resistors.
Resistor R51 looks like a 600mW in 0.4" pad pitch
R40 looks like the bigger 500mW in a 0.5" or 0.6" pad pitch.
R13 is a tiny resistor in the standard pad pitch of 0.4"
A 6.5mm, or 6.8mm, body length fits comfortably into 0.4" (10.16mm) pad pitch.
Check you pad pitch for the standard resistors.
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https://www.seielect.com/Catalog/SEI-RNF_RNMF.pdf
for the 1/4 watt the stackpole rnmf are tiny. I believe panasonic also does a miniature line.
Or You can just do as in the attached photo (extreme example for show) and not worry too much.
E
for the 1/4 watt the stackpole rnmf are tiny. I believe panasonic also does a miniature line.
Or You can just do as in the attached photo (extreme example for show) and not worry too much.
E
Attachments
Assuming not too much parallax, I see >>5/16ths and <3/8ths
It looks like ~9mm (0.354") to my eyes. Maybe he set the layout to 0.35"
A bit small for 6.8mm body resistors.
Would work with 6mm bodies.
FYI; for those interested: "Resistor Pitch Pad Measurements"
R23, R27, R32, R33, R37, R42-46 - All measure 0.500 (1/2) (12.7mm)
R38-41 - Measure 0.594 (19/32) (15mm)
R36 - Measure 0.656 (21/32) (16.5mm)
R49-50 - Measures 0.719 (23/32) (18.3mm)
All other resistors (except trimmers) measured 0.344 (11/32) (8.75mm)
Note: I used a precision ruler (in 64th's), and had only 2 glasses of red wine.
Measurments should be accurate.
R23, R27, R32, R33, R37, R42-46 - All measure 0.500 (1/2) (12.7mm)
R38-41 - Measure 0.594 (19/32) (15mm)
R36 - Measure 0.656 (21/32) (16.5mm)
R49-50 - Measures 0.719 (23/32) (18.3mm)
All other resistors (except trimmers) measured 0.344 (11/32) (8.75mm)
Note: I used a precision ruler (in 64th's), and had only 2 glasses of red wine.
Measurments should be accurate.
Another FYI:
Mouser shows all 1/2W MFR series Yageo resistors at 2.4mm length, the data sheets shows 6.3mm. I believe they were looking at the diameter.
Mouser shows all 1/2W MFR series Yageo resistors at 2.4mm length, the data sheets shows 6.3mm. I believe they were looking at the diameter.
Okay, I think I've decided to go with the 1/2 watt MFR Yageo resistors for most of them...
It allows me to use 1/2 watt 1% resistors (which isn't so important for this project, but allows my stockpile to be a little more flexible in the future, I think). These resistors are smaller than some of the suggests (6.3mm Vs. 6.5mm for the 0.344 pads), metal-film Vs carbon film, and 1% vs 5%. I am starting to think that I am overthinking this way too much.
Any last objections?
It allows me to use 1/2 watt 1% resistors (which isn't so important for this project, but allows my stockpile to be a little more flexible in the future, I think). These resistors are smaller than some of the suggests (6.3mm Vs. 6.5mm for the 0.344 pads), metal-film Vs carbon film, and 1% vs 5%. I am starting to think that I am overthinking this way too much.
Any last objections?
If your resistor bodies are a bit too long to comfortably fit the pad pitch on the pCB, you can use the double bending shown in post 2006. (That looks like an 8mm body into a 5.08mm pitch, quite extreme).
Raising the resistors above the PCB does give the advantage of leaving a place to hook on a test probe for safer measuring during the test phase.
Raising the resistors above the PCB does give the advantage of leaving a place to hook on a test probe for safer measuring during the test phase.
"Always look on the bright side of life" . I don't know why that reminded me of Monty Python
Picked up 6 feet of enameled 18 GA copper wire today while I was out of town! I'll probably do a Mouser order tomorrow or the next day for the badgers. I was gonna order stuff for the PSU, etc. But will probably do that later. Still have a few decisions to make.
Also picked up a resistor bin with 64 drawers, and re purposed an old door into a work table. I officially have a "shop" in my basement now lol.
Also picked up a resistor bin with 64 drawers, and re purposed an old door into a work table. I officially have a "shop" in my basement now lol.
I covered my old door in a sheet of 1/8" hard board.
Replaceable when it becomes too damaged.
Replaceable when it becomes too damaged.
If you work like many of us, you won't see the bench top for long anyway. It'll be buried in tools and parts.