FIELD: electricity.
SUBSTANCE: device contains main (1) and reserve (4) power supply sources, stabiliser diodes (8) of parametric stabiliser (6), diode (3), the first transistor of n-p-n type (5), resistor (10) and stabiliser diode (8) of parametric voltage stabiliser (6). Additionally the second transistor of n-p-n type (11) with collector-emitter junction included in parallel to stabiliser diode (8) of parametric stabiliser (6) and its base through resistor (10) connected to collector of p-n-p type transistor (9).
EFFECT: reduction of consumption in reserve power supply mode, enhancement of reliability and simplification of circuit design.
2 dwg
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RU2446541C1 |
