Ramp generator

Details Ramp generator Ramp generator

H - Electricity

03

K

H03K 4/48 (2006.01) H03K 4/00 (2006.01) H03K 4/501 (2006.01) H03K 4/56 (2006.01)

Patent

CA 2138923

A ramp generator has an integrator, which provides a ramp output, and a counter, which counts a clock signal during the rise period. The counter and clock are arranged so that when the actual rise time is equal to the desired rise time, the counter overflows and returns to zero. If the rise time is too slow, the counter will contain a count at the end of the rise period. A register is connected to receive this count and an adder adds the contents of the register to the contents of the adder repeatedly each time a clock pulse is generated. The adder has an output connected to the input of the integrator and, each time the adder overflows, supplies a correction pulse to the integrator so that its rise rate is increased.

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