Neon sign transformer

Details Neon sign transformer Neon sign transformer

1990-05-29

1991-09-03

LaRoche, Eugene R.

Electric lamp and discharge devices: systems

Periodic switch in the supply circuit

Silicon controlled rectifier ignition

315200R, 315219, 315220, 315DIG7, H05B 4136

Patent

active

050457608

ABSTRACT:
A neon sign transformer for operating a neon tube from a mains frequency alternating current comprising: a filter for filtering electro-magnetic interference from said alternating current; a first rectifier for rectifying said filtered alternating current so as to produce a low level alternating current; electrical circuit driver for generating a high frequency low level alternating current; an electrical power circuitry for generating a high frequency high level alternating current then rectified to provide said high level direct current for energizing said neon tubes.

REFERENCES:
patent: 3585483 (1971-06-01), Skirvin
patent: 3753040 (1973-08-01), Quenelle
patent: 4488090 (1984-12-01), Hancock
patent: 4563616 (1986-01-01), Stevens
patent: 4572990 (1986-02-01), Leale et al.
patent: 4745342 (1988-05-01), Andresen et al.
patent: 4748381 (1988-05-01), Ganser et al.
patent: 4891561 (1990-01-01), Amano et al.

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