Panasonic globe CFL
Found at a stall at a steam rally. Cost me only 20p or so! Good quality 90s Japanese CFL.

Panasonic globe CFL

Found at a stall at a steam rally. Cost me only 20p or so! Good quality 90s Japanese CFL.

Screenshot_20200407-121327.jpg Screenshot_20200408-164927.jpg Screenshot_20200410-132451.jpg Screenshot_20200411-150553.jpg Screenshot_20200415-171209.jpg
File information
Filename:Screenshot_20200410-132451.jpg
Album name:LAllenLighting / CFL lamps
Manufacturer:Panasonic
Wattage:16w
Date manufactured:90s
Filesize:319 KiB
Date added:17 Sep, 2020
Dimensions:912 x 1080 pixels
Displayed:9 times
URL:http://80.229.24.59:9232/gallery/displayimage.php?pid=14618
Favourites:Add to Favourites

Comment 1 to 1 of 1
Page: 1

BC5-80   [01 Oct, 2020 at 02:56 PM]
I remember investigating these a long time ago as part of my job. I was shocked to see that they used MOSFETs in a self-oscillating voltage-fed half bridge circuit, where everyone else would use bipolar transistors. The MOSFETs ran far too hot due to their resistive on-state losses, compared with bipolar transistors which run nice and cool in a correctly optimised circuit.

Comment 1 to 1 of 1
Page: 1

Add your comment
Anonymous comments are not allowed here. Log in to post your comment