madbeanpedals::forum

Projects => Tech Help - Projects Page => Topic started by: playpunk on January 19, 2014, 09:25:21 PM

Title: 1n270 v cd SN 270?
Post by: playpunk on January 19, 2014, 09:25:21 PM
Are these the same thing? 1n270 and CD SN 270? I have a pair of blue and black diodes that are really little (1n4148/1n914 size), and I kinda doubt they're germanium... But I could be wrong. They're in a bag from Mammoth labled 1n270, but look more like BAT diodes to me.

I don't have a macro lense, so can't post pictures.
Title: Re: 1n270 v cd SN 270?
Post by: pickdropper on January 19, 2014, 11:31:59 PM
Quote from: playpunk on January 19, 2014, 09:25:21 PM
Are these the same thing? 1n270 and CD SN 270? I have a pair of blue and black diodes that are really little (1n4148/1n914 size), and I kinda doubt they're germanium... But I could be wrong. They're in a bag from Mammoth labled 1n270, but look more like BAT diodes to me.

I don't have a macro lense, so can't post pictures.

What is the voltage drop across them?
Title: Re: 1n270 v cd SN 270?
Post by: playpunk on January 19, 2014, 11:53:21 PM
I don't really know how to measure FV.
Title: Re: 1n270 v cd SN 270?
Post by: midwayfair on January 20, 2014, 12:13:54 AM
Quote from: playpunk on January 19, 2014, 11:53:21 PM
I don't really know how to measure FV.

Set your multimeter to continuity. Put the black lead of the diode on the cathode (usually has a stripe) and the red lead on the anode. If it says 1, flip the diode (it's backwards). You should get a reading of a few hundreths of a volt. That's the forward voltage drop.

You'll notice that the continuity setting looks like a diode. ;)
Title: Re: 1n270 v cd SN 270?
Post by: playpunk on January 20, 2014, 03:44:49 AM
FV = .37

and .36