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just got a metric shit ton of these, but you can't measure them the normal way with your DMM. Anyone know how you can? Thanks

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Everyone likes sausage. Nobody wants to see how it's made.

I use my Peak meter and they seem to read properly, although mine look a bit different than those. When you say “normal method” you’re using a series resistor with some sort of power applied and reading the voltage drop across the diode?

Peak Atlas? I didn't think of that. I can measure forward voltage on my Fluke 111

Thanks MIke

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Everyone likes sausage. Nobody wants to see how it's made.

Dude, you’re more than welcome to borrow my Atlas for a month or so if you don’t have one. LMK

If I recall, there’s something weird about Russian Germaniums trannies that make them difficult to measure (same reason they don’t show leakage) and the Atlas is the only way I’ve found to get accurate hfe. It may be a similar deal.

Too kind, as always, MIke Thanks, I got this. Damn, these are a lot higher than the listing on ebay said.

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Everyone likes sausage. Nobody wants to see how it's made.

Damn MIke,

I just edited your post. Sorry.

Geek


They all measure out to that. Exactly. If they didn't come up to spec, the worker got sent to the Gulagog ....gonna find a good configuration by loading up this board....(thank you Spin)

That's actually my post. Sorry

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Everyone likes sausage. Nobody wants to see how it's made.

Need me one of those Atlas testers, looks handy.

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It hurts me to say this.. but.. follow me on facebook and.. instagram

You are welcome to mine anytime.

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Everyone likes sausage. Nobody wants to see how it's made.

I don't know if you know this, but you can place diodes in parallel to bring down the forward voltage, exactly the same way you can place resistors in parallel. This is how I'm able to have 3 diode choices on the Mouse and Silver pony kits with just an on-off-on SPDT toggle (instead of just 2 choices and no diodes). The LED, which has the highest FV is "always on". The other settings add diodes in parallel to bring the FV down to the desired level, so technically, "Ge" mode is really LEDs and Ge diodes in parallel. The material of the clipping device means absolutely nothing. Germanium diodes don't have a particular sound that is inherent to them because of the germanium....it's simply that Ge diodes just have an inherently low forward voltage. It's all about the forward voltage. Same with MOSFETs. There' s nothing special about the fact that they are Metal Oxide Field Effect Transistors....they just have a forward voltage that is a tiny bit lower than the typical 1N4148 or 1N914, so they sound every so slightly more compressed and saturated.

You can test this with the Atlas. If you placed two of those D9K in parallel, you should have a forward voltage of 21mV.

FYI, if you place 3 x 1N4148 (which have a typical FV of 1.1V each) in parallel, this will give you a forward voltage of 36mV, which is the typical FV of the 1N34 or 1N60...assuming that's the device you are going for. 1N4148 and D9K in parallel should get you around 31mV, which is probably close enough.

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*patience is a virtue*

Please do not PM me. email is prefered. keith@buildyourownclone.com

Thank you, Keith. You da man.

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Everyone likes sausage. Nobody wants to see how it's made.

Wouldn't that be 210mV and 360mV? 1V = 1,000mV

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“My favorite programming language is SOLDER” - Bob Pease (RIP)

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You're right. Stick a zero on everything I called mV.

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*patience is a virtue*

Please do not PM me. email is prefered. keith@buildyourownclone.com