Back to results
US 4,057,740 AGranted
Constant duty cycle monostable
AssigneeW. R. Grace & Co.
InventorLeonard E. Arguello
Life of this patent
Estimating the term…
Abstract
A circuit that functions as a monostable multivibrator and has a constant duty cycle regardless of the frequency of the input trigger signal is particularly useful in electronic ignition systems for internal combustion engines.
Claims6
Monostable multivibrator circuit with constant duty cycle comprising:
- a flip-flop having a first input for switching the flip-flop to a first state, a second input for switching the flip-flop to a second state, and an output;
- a comparator means coupled to the first input and capable of generting an output signal when an input signal applied thereto reaches a predetermined level;
- a timing and storage means coupled to the second input of said flip-flop;
- a charging means coupled to the timing and storage means;
- and,
- a discharging means coupled to the timing and storage means and responsive to output signals from the flip-flop, whereby said timing and storage means is charged by said charging means and is discharged responsive to receipt of an output signal from said flip-flop, and whereby said flip-flop produces its output signal responsive to receipt of an output signal from said comparator means.
3 more elements
Dependencies are inferred from the claim text.