Communications: electrical – Selective – Having indication or alarm
Patent
1977-10-11
1979-07-03
Yusko, Donald J.
Communications: electrical
Selective
Having indication or alarm
340641, 307271, 315200A, B60Q 146, H03B 3282, H03K 108
Patent
active
041602358
ABSTRACT:
A pulse generator comprises a comparator to the inputs of which are connected a capacitor chargeable by a power source and a voltage divider respectively, two transistors being connected to the output of the comparator, one to set the voltage ratio of the voltage divider and one to provide a discharge path for the capacitor and two additional transistors being selectively connected to the comparator output, one providing a different voltage ratio of the voltage divider and the other providing an independent discharge path for the capacitor.
REFERENCES:
patent: 3735196 (1973-05-01), Bolinger et al.
patent: 3973238 (1976-08-01), Kato et al.
patent: 4052626 (1977-10-01), Tuma et al.
LICENTIA Patent-Verwaltungs-G.m.b.H.
Yusko Donald J.
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