Please help me translate a Russian diode spec sheet

[guitarmageddon]

Hi, first post, I was directed to this , possibly more internationally minded forum by a member of BYOC, where I post regularly.

I've been scouring Russian Ebay and came across these cool looking Ge D2B Diodes.




Problem is I'm not able to decipher the spec sheet... Russian is 'all Greek to me'
Can anyone tell if these would be useful as clippers? ie, which number is the forward voltage drop?

[doctor]

Hi, first post, I was directed to this , possibly more internationally minded forum by a member of BYOC, where I post regularly.

I've been scouring Russian Ebay and came across these cool looking Ge D2B Diodes.

[ATTACH=CONFIG]16137[/ATTACH]


Problem is I'm not able to decipher the spec sheet... Russian is 'all Greek to me'
Can anyone tell if these would be useful as clippers? ie, which number is the forward voltage drop?

[ATTACH=CONFIG]16138[/ATTACH]

Hi guitarmageddon,

See translated table.
I removed one row containing column numbers and added two columns containing color marking.

[guitarmageddon]

Thank you so much, you're both a gentleman and a scholar.

[Enzo]

You are new here, so don;t forget to turn the chart upside down for Australia.




Geez, I never get tired of that joke...

[J M Fahey]

Well, Greek should be easy for you, since you live in Eureka !!!!

PS: 1V forward voltage looks high to me (for a Ge diode), *maybe* (I´m only guessing) they state a "safe" "not higher than" value to cover their backs.
I would measure actual voltage drop, while feeding them, say, 1mA through a suitable resistor.
Obviously you are not using them to build a power supply but in some kind of distortion circuit.
jm2c

[Mark Hammer]

I don't know why, but I've gotten what are ostensibly germanium diodes, that had voltage drops of 350mv and more. Does anyone, or has anyone, made germanium diodes that were essentially two in series within the same package?

As to whetherdiodes like these are desirable for clipping, ultimately it's going to depend on what sound you are looking for, how much gain you apply, and what sort of input signal amplitude you're looking at.

[guitarmageddon]

I'm taking a punt and have ordered some to try.
I generally like the 'softer' sound of ge clippers, (slower turn on rate?) so hopefully these will have that characteristic sound, but with less signal loss.
I will give them a try in my octave gadgets like the green ringer too.

[loudthud]

I was looking at a Ge diode on the curve tracer recently. Probably a 1N34 but has the Tektronix house number 152-0075-00. The forward voltage drop: 0.1V @ 13uA, 0.2V@ 250uA, 0.3V @ 2mA. There is virtually no off zone. It starts conducting right from the zero crossing. In the reverse direction there is a leakage current of 200nA at -0.1V that stays pretty constant.