Text only | Text with Images

madbeanpedals::forum

Projects => General Questions => Topic started by: GeorgeFormanGrill on January 30, 2014, 03:56:09 AM

Title: "Continental" PNP GE Transistor
Post by: GeorgeFormanGrill on January 30, 2014, 03:56:09 AM
Hey All:

I just bought the "Continental" PNP germanium transistors off small bear. I'm trying to be extra careful with this build. Does the red dot on the side of the transistor mean emitter or collector?

Thanks so much,
George
Title: Re: "Continental" PNP GE Transistor
Post by: Scruffie on January 30, 2014, 04:05:01 AM
Red dot usually indicates collector, I can't think of examples where it doesn't.
Title: Re: "Continental" PNP GE Transistor
Post by: pryde on January 30, 2014, 04:06:49 AM
If you have the OC140 (or CV7112) transistors then red dot is C

EDIT: Scruffie beat me to the punch
Title: Re: "Continental" PNP GE Transistor
Post by: GeorgeFormanGrill on January 30, 2014, 10:33:21 PM
Right on. Thanks for the responses. Huge help!
Title: Re: "Continental" PNP GE Transistor
Post by: GeorgeFormanGrill on January 31, 2014, 08:39:18 PM
Does anyone know if the germanium diode that Small Bear includes with the continental PNP transistors will work as a replacement for the 1n34a diode in the Bumblebee build?

Thanks!
George
Title: Re: "Continental" PNP GE Transistor
Post by: dondougie on February 01, 2014, 06:08:29 PM
Yes, you can use the diode from Smallbear. Any germanium type works there, it stabilizes the bias of Q3 so it won't make any difference in tone.
Text only | Text with Images