Re: Transistors Help - SK100/SL100

From: Joerg (notthisjoergsch_at_removethispacbell.net)
Date: 10/27/04


Date: Wed, 27 Oct 2004 00:25:46 GMT

Hello,

>Hi, Steve. The requirements of the circuit are NPN and PNP power transistors
>that can switch 1 amp and have a Vceo of greater than 10V or so. Basically,
>just about any NPN and PNP TO-220 transistors will do. If you want to do Radio
>Shack, try the
>
>
And make sure they have enough beta. Those 1K resistors won't source
more than about 8mA of base current.

Regards, Joerg

http://www.analogconsultants.com



Relevant Pages

  • FS: 3 Gently Used Scanners
    ... Going through the shack and noticed I have 3 scanners going unused. ... applications, ham radio, marine radio, weather, emergency services, aircraft ... Missing original, internal whip antenna, but has external antenna jack. ...
    (rec.radio.scanner)
  • Re: Role of ignition condenser in a distributor? & Radio Shack ranting
    ... Few people do electronic hobbies anymore. ... I built my own transistor radio before anyone else had ... I built a PVR ... but I bet you didn't make your own transistors or capacitors or invent ...
    (sci.electronics.misc)
  • Re: what other good theories?
    ... nor radio, tv, vacuum tubes, transistors, radar, microwave owns, ... they had to came with theories in order explain tha inventions ... Specifically in the case of radio, ...
    (sci.physics.relativity)
  • Re: Beta degradation quantified?
    ... transient reverse breakdown on the E-B junction? ... breakdown DOES degrade the beta. ... much about ESD on regular BJTs and bipolar transistors. ... measurement of a typical discrete transistor EB junction would be. ...
    (sci.electronics.design)
  • Re: Transistors
    ... I am new to electronics and working with transistors for the first ... Yes, but beta depends strongly on Ic and temp, as that graph shows. ... The operating point needs to be stabilised too, there are 2 main ways for common emittor: ... The input impedance is R1 parallel with R2 parallel with the ...
    (sci.electronics.design)