Electrical transmission or interconnection systems – Switching systems – Repetitive make and break
Patent
1983-02-14
1984-10-30
Eisenzopf, Reinhard J.
Electrical transmission or interconnection systems
Switching systems
Repetitive make and break
307140, 3071414, 361196, H01H 4700
Patent
active
044801947
ABSTRACT:
With this circuit, a current may be caused to flow through a contact (K) controlling the voltage supply of an electronic control circuit (24), of sufficient intensity for the reliability of the contact to be good, without the current flowing in the control circuit (24) being too high and this independently of the supply voltage (terminals E, 44) applied to the supply terminals of the user circuit (U). For this, the control circuit (24) is fed with power when the contact (K) is closed, through said contact (K), a first diode (31) and a resistor (32) connected in series, whereas a piloting circuit (11), which is an integrated time delay or memory circuit associated with said user circuit (U), is then supplied through said contact (K) and a second diode (26). When contact (K) is open, said piloting circuit (11) is fed through a third diode (29) and a Zener diode (30), the second diode (26) then preventing the control circuit (24) from being supplied with power.
REFERENCES:
patent: 3784881 (1974-01-01), Van Horn et al.
patent: 3814949 (1974-06-01), Weinberg
patent: 4354747 (1982-10-01), Borowski et al.
patent: 4415943 (1983-11-01), Wortman
Barthelemy Philippe
Baurand Gilles
Roussel Francois
Drucker William A.
Eisenzopf Reinhard J.
Jennings Derek S.
La Telemecanique Electrique
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