Replacing failed powersupplies on qbus PDP-11s

Gordon JC Pearce MM3YEQ gordonjcp at gjcp.net
Mon Feb 2 02:35:41 CST 2009


On Sun, 2009-02-01 at 23:43 -0500, der Mouse wrote:

> > [1[ There heve been supplies using SCRs triggered at the right point
> > in the mains cycle.  They're not common,
> 
> Not in computers, maybe.  But - well, incandescent lamp dimmers.
> Variable-speed power hand drills.

Most 1970s colour TVs...

Gordon



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