Re: Solid State Voltage and Current Regulator (fwd)

To: "'Tesla List'" <tesla-at-pupman-dot-com>
Subject: Re: Solid State Voltage and Current Regulator (fwd)
From: Tesla List <tesla-at-stic-dot-net>
Date: Mon, 5 Jan 1998 19:02:38 -0600
Approved: tesla-at-stic-dot-net

From: 	Harri Suomalainen[SMTP:haba-at-cc.hut.fi]
Sent: 	Monday, January 05, 1998 9:02 AM
To: 	tesla-at-pupman-dot-com
Subject: 	Re: Solid State Voltage and Current Regulator (fwd)

>Date: Fri, 2 Jan 1998 22:34:20 -0700
>From: Bill Noble <william_b_noble-at-email.msn-dot-com>
>To: Tesla List <tesla-at-pupman-dot-com>
>Subject: Re: Solid State Voltage and Current Regulator
>
>beware that if the transistors fail they will (typically) short, so
you will
>suddenly burst up to full power - this may not be a good thing.
>
>also, you said "dissipates" 3 KW - did you really mean that it will
pass
>3KW???  I would hope the dissipation is much lower than 3KW.

The configuration that has been described has a transistor in the
series-pass configuration.
The transistor acts like a variable resistor! It will indeed
dissipate a lot of power. That's one
of the reasons I'm not fond of that approach even though it is very
simple one to build.
Some pwm approach would be much better.

--
Harri Suomalainen
mailto:haba-at-cc.hut.fi