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Old Capacitor Codes?

G

Grant Stockly

Jan 1, 1970
0
I have second hand word that a specific capacitor is a Z5U 1000M 1KV.
This doesn't follow the standard 3 digit capacitor code. Is it
possible back in the 70s that 100pf could be written as 1000M instead
of 101M?

Grant
 
E

Eeyore

Jan 1, 1970
0
Grant said:
I have second hand word that a specific capacitor is a Z5U 1000M 1KV.
This doesn't follow the standard 3 digit capacitor code. Is it
possible back in the 70s that 100pf could be written as 1000M instead
of 101M?

Z5U is the dielectric.

M is the tolerance code - 20% IIRC.

It looks like 1000 pF to me.

Graham
 
T

Tom Biasi

Jan 1, 1970
0
Grant Stockly said:
I have second hand word that a specific capacitor is a Z5U 1000M 1KV.
This doesn't follow the standard 3 digit capacitor code. Is it
possible back in the 70s that 100pf could be written as 1000M instead
of 101M?

Grant

You have a 1000pF 1000Volt cap.

"In the 70s" 1000pF would have been 1000MMF.

M meaning micro (10^-6)

I bet some guys here called them Mickey Mikes.

Tom
 
M

Michael A. Terrell

Jan 1, 1970
0
Tom said:
You have a 1000pF 1000Volt cap.

"In the 70s" 1000pF would have been 1000MMF.

M meaning micro (10^-6)

I bet some guys here called them Mickey Mikes.

Tom


"Picklefarts" was used a lot more than "Mickey Mikes".


--
Service to my country? Been there, Done that, and I've got my DD214 to
prove it.
Member of DAV #85.

Michael A. Terrell
Central Florida
 
R

Radiosrfun

Jan 1, 1970
0
Michael A. Terrell said:
"Picklefarts" was used a lot more than "Mickey Mikes".


--
Service to my country? Been there, Done that, and I've got my DD214 to
prove it.
Member of DAV #85.

Michael A. Terrell
Central Florida

Been a long time since having heard the term - Mickey Mikes, but can't
recall ever hearing "Picklefarts". I "may" have - just can't recall it at
moment.
 
M

Michael A. Terrell

Jan 1, 1970
0
Radiosrfun said:
Been a long time since having heard the term - Mickey Mikes, but can't
recall ever hearing "Picklefarts". I "may" have - just can't recall it at
moment.


It might have been a regional thing. It was a common term around the
shops I worked at as a kid.


--
Service to my country? Been there, Done that, and I've got my DD214 to
prove it.
Member of DAV #85.

Michael A. Terrell
Central Florida
 
M

Michael Black

Jan 1, 1970
0
Tom Biasi" (tombiasi@********optonline.net) said:
You have a 1000pF 1000Volt cap.

"In the 70s" 1000pF would have been 1000MMF.
Actually, by the 70's it was pretty much over.

IN the early sixties, about 1963, some standards organization cleared
out some of the rot, so there was a more consistent useage. It
was the same thing that brought in the term "Hertz" rather than
the previous "cycles per second".

And that's when pF came along, to replace the somewhat odd "mmf" or
"uuF".

By the seventies, the only reason you'd see "mmF" is because parts
still in use were marked that way, and the relative oldtimers hadn't
switched over. It was no longer showing up in the magazines.

Michael
 
M

Michael Black

Jan 1, 1970
0
But my point was that "uuF"/"mmF" was no longer used by the seventies.

Michael
 
E

Eeyore

Jan 1, 1970
0
Michael A. Terrell said:
"Picklefarts" was used a lot more than "Mickey Mikes".

Over here we call them puffs or puff.

Graham
 
E

Eeyore

Jan 1, 1970
0
Only true of the USA.

I was using nF well before that time.

Graham
 
E

Eeyore

Jan 1, 1970
0
John said:
---
Then your point was wrong.

I was working at Racal-Milgo in Miami in the '70's, and 1000µµF was
still what we called "1000 Mickey Mikes".

But you Americans drag your feet over everything.

I was using nF in the late 60s. My Philips "Transistor Audio and Radio Circuits"
handbook has nF and it was printed in 1969.

Graham
 
M

Michael A. Terrell

Jan 1, 1970
0
Eeyore said:
Over here we call them puffs or puff.

Graham


I believe you, but I've never met a puff in the USA.


--
Service to my country? Been there, Done that, and I've got my DD214 to
prove it.
Member of DAV #85.

Michael A. Terrell
Central Florida
 
M

Michael A. Terrell

Jan 1, 1970
0
Eeyore said:
But you Americans drag your feet over everything.

I was using nF in the late 60s. My Philips "Transistor Audio and Radio Circuits"
handbook has nF and it was printed in 1969.

Graham


nF was in use in the early '60s, but it went away.


--
Service to my country? Been there, Done that, and I've got my DD214 to
prove it.
Member of DAV #85.

Michael A. Terrell
Central Florida
 
L

Lionel

Jan 1, 1970
0
"Picklefarts" was used a lot more than "Mickey Mikes".

Over here, we used to call them "puffs".
As in: "Anyone got a 100 puff cap in their kit?"
 
L

Lionel

Jan 1, 1970
0
Only true of the USA.

I was using nF well before that time.

Ditto. "nF" was in common use in Oz at least as early as the mid 70s.
 
J

John Fields

Jan 1, 1970
0
Only true of the USA.

I was using nF well before that time.

---
So were we.

The point I was making, which you seemed to have missed, is that
Michael Black's comment that: "Actually, by the 70's it was pretty
much over." was untrue since the old notations lingered for a long
time.
 
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