Direct current to alternating current converter

Details Direct current to alternating current converter Direct current to alternating current converter

1981-02-23

1982-10-05

Shoop, William M.

Electric power conversion systems

Current conversion

Using semiconductor-type converter

315219, 315225, 363 37, H02M 7537

Patent

active

043531164

ABSTRACT:
The invention relates to a d.c. to a.c. converter comprising two transistors (22, 25) and an output transformer (21). This converter also includes an auxiliary d.c. voltage source (43) and is provided with an auxiliary winding (40) of the transformer (21) which connects the base of one transistor (22) to the base of the other transistor (25).
According to the invention, the combination of the auxiliary d.c. voltage source (43) and a control circuit of the two transistors (22, 25) comprises a current blocking means (44) such that the converter can be supplied with a pulsed d.c. voltage. Consequently, that converter can be operated from a low frequency a.c. voltage mains via an auxiliary full-wave rectifier (5 to 8), which does not need to have a high value smoothing capacitor.

REFERENCES:
patent: 3009115 (1961-11-01), Johnson
patent: 3111632 (1963-11-01), Murphy
patent: 3818312 (1974-06-01), Luursema et al.
patent: 3829794 (1974-08-01), Gautherin
patent: 3973165 (1976-08-01), Hester

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