fusible link questions

[Steve Sassine]

On Sun, 7 Feb 1999, Justin Guest wrote:

> This could be quite useful if you controlled it properly. A lot of people 
> spend a lot of money trying to increase 12v up to something useful for 
> ICE. Does anyone know how to get an alternator to deliver higher 
> voltages. I was looking at this sort of design with two alternators in 
> mind one running at 12v and the other at a higher voltage. Its a long 
> time since I did my HNC and I was not really interested in generators and 
> alternators at the time.
> 
> Sorry this is not about EFI but it is electronics.
> 
> 
> Regards Justin Guest
> Email as header or jg55776 at glaxowellcome.co.uk
> Phone +44 (0) 1229 482549
> 
> 
> >On Thu, 4 Feb 1999, Steve Sassine wrote:
> SNIP
> >
> >Canadain tire used to sell a box that would output 120 vdc from the 
> >alternator. it just full fielded the alt and at around 1500 rpm 120 v
> >
> >scarry eh
> >
> SNIP
> 

      It is not vary hard to also get 120 v ac at 50-60 hz. Remember that
most alternators are three phase sync motors. The Three phase output
voltage is rectified using a full wave bridge rectifier. This low voltage
output, say is is at 12v RMS, can be stepped up using a step up
transformer. You only need to by-pass the bridge rectifier. Also need to
check the sine wave for different higher order harmonics. This set up can
also regulate the ouput voltage.

 from steve sassine