| 摘要 |
PCT No. PCT/DE81/00193 Sec. 371 Date Aug. 26, 1982 Sec. 102(e) Date Aug. 26, 1982 PCT Filed Nov. 6, 1981 PCT Pub. No. WO82/02807 PCT Pub. Date Aug. 19, 1982.The sawtooth voltage generator is intended in particular for use as a clock and reference voltage generator of an electronic regulating means for a motor vehicle heating system. The generator has an output voltage having a leading edge determined by a first RC circuit and a trailing edge determined by a further RC circuit. A first capacitor (C1) and a second capacitor (C3) are charged rapidly; the second capacitor (C3) has its own discharging circuit, e.g. a resistor (R7). The curve form of the trailing edge of the output voltage can be substantially freely determined with a nonlinear wave shape which is suitable for compensating for non-linear characteristics of elements of a regulating apparatus intended for receiving the output voltage with the operating frequency being determined by the discharge circuit (R4), the first capacitor (C1). The RC member (C3, R7) which determines the trailing edge of the output voltage is coupled for charging, by a diode (D2), to the first capacitor (C1) so that two capacitors (C1, C3) can be charged very rapidly, substantially via a single low-resistance charging resistor (R5).
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