UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Practical Electronics. Battery Valve Radio Power Supply.

Philips210 · 3rd Dec 2021, 4:42 pm

Hi.

The LT supply is derived via a linear voltage regulator whereas the HT supply is switch mode with a typical center frequency of 72kHz.
It seems to use readily available components and no special wound parts, just a standard iron core mains transformer

To quote a few points from the Features and Specifications:

Runs from two or four Li-ion, LiPo or LiFePo4 batteries
HT output 24 to 135V DC at 2W
LT output 1.2 to 2.5V at up to 3A (with a heatsink)
Low EMI. Variable drive frequency and duty cycle.
Battery over discharge protection

Regards,
Symon

3rd Dec 2021, 4:42 pm	#10
Philips210 Nonode Join Date: May 2007 Location: Redruth, Cornwall, UK. Posts: 2,573	Re: Practical Electronics. Battery Valve Radio Power Supply. Hi. The LT supply is derived via a linear voltage regulator whereas the HT supply is switch mode with a typical center frequency of 72kHz. It seems to use readily available components and no special wound parts, just a standard iron core mains transformer To quote a few points from the Features and Specifications: Runs from two or four Li-ion, LiPo or LiFePo4 batteries HT output 24 to 135V DC at 2W LT output 1.2 to 2.5V at up to 3A (with a heatsink) Low EMI. Variable drive frequency and duty cycle. Battery over discharge protection Regards, Symon