British Vintage Wireless & Valve Radio - Bulgin Open Vane Neutralising Condenser

Neutralising condensers (also called balancing condensers) were used to counter-act the stray capacitances found between the grid and anode of a valve causing unwanted reaction and instability. By introducing an anti-phase signal back to the grid a negative reaction effect could be produced.

This Bulgin condenser is designed for baseboard mounting and has nickel-silver contacts fitted at the base.

The advert shown right is taken from Wireless World dated February 13th 1929 showing a 65pF model costing 5 shillings.



© 2008 www.valve-radio.co.uk	Bulgin Open Vane Neutralising Condenser Neutralising condensers (also called balancing condensers) were used to counter-act the stray capacitances found between the grid and anode of a valve causing unwanted reaction and instability. By introducing an anti-phase signal back to the grid a negative reaction effect could be produced. This Bulgin condenser is designed for baseboard mounting and has nickel-silver contacts fitted at the base. The advert shown right is taken from Wireless World dated February 13th 1929 showing a 65pF model costing 5 shillings.