Re: Voltage halver.

On 03 Apr 2024 12:07:10 -0700, peter@easthope.ca wrote:

A variable power adapter is required to drive a 6 V, 30 W incandescent
bulb in a microscope.
>
Similar to the 3-12 V 5 A adapter here.
https://www.ebay.ca/itm/305207182573
An adapter providing 1.5-6 V output would be better but I haven't
found one.
>
Rather than limit the adjustment to 6 V, I think of halving the
output.  An integrated circuit in a 4 port package is conceivable.
https://www.youtube.com/watch?v=VJfqBQ2ybpk
>
Does the marketplace offer a solution?
Another idea?
>
Thanks,                  ... P.
>
>

What does the microscope manufacturer supply for this function?

If you have a >6V source, simple 555-type buck regulators are
 available with minimum output listed as 1.8V

https://www.aliexpress.com/item/1005006482720286.html?

These generally regulate the negative output terminal, unfiltered.
This would not be an issue for an isolated 6V incandescent lamp.

Rl