UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Transcendental magic: Schade's peak voltage equation and my discovery!!

G8HQP Dave · 15th Nov 2017, 1:40 pm

Achievable Q depends on the technology being used. Discrete L and C puts you in the low 100s - the limit is set by resistance, dielectric losses, ferromagnetic losses (if a core is used) and radiation losses. Cavities in the high 100s. Ceramic resonators (as used in some AM sets) maybe in the 1000s? Quartz crystals in the 10,000s. More exotic resonators (rings?) go higher.

15th Nov 2017, 1:40 pm	#19
G8HQP Dave Rest in Peace Join Date: Sep 2008 Location: Solihull, West Midlands, UK. Posts: 4,872	Re: Transcendental magic: Schade's peak voltage equation and my discovery!! Achievable Q depends on the technology being used. Discrete L and C puts you in the low 100s - the limit is set by resistance, dielectric losses, ferromagnetic losses (if a core is used) and radiation losses. Cavities in the high 100s. Ceramic resonators (as used in some AM sets) maybe in the 1000s? Quartz crystals in the 10,000s. More exotic resonators (rings?) go higher.