TY - JOUR
AU - Petrovich, V.
AB - FREQUENCY MULTIPLIER WITH PULSE FEEDBACK FOR LOW- FREQUENCY DIGITAL MEASURING INSTRUMENTS UDC 621. 374.~6 21.3.082.97 V. I. Petrovich Application of frequency multipliers with pulse feedback simplifies the design and im- proves the speed of response of low-frequency frequency meters, tachometers, and phase meters. The block diagram of a frequency multiplier with pulse feedback is shown in Fig. I. The multiplier consists of an input signal shaper I, a circuit that converts the input sig- nal period into a dc voltage 2, a voltage-to-frequency converter 3, a pulse feedback top loop including frequency divider 4, and a flip-flop 5. The repetition frequencies of the frequency multiplier output pulses fout and of the in- put pulses fin are related by four = n fin, where n is the division factor of frequency divider 4. The frequency multiplier circuit diagram is shown in Fig. 2. The multiplier has been designedto operate in a universal digital instrument which measures frequency, rotations per minute, and phase in the frequency range from 5 to I000 Hz. The multiplier has three outputs with multiplication factors 60, i00, and 360. Input pulses with a repetition rate fo are applied to a monostable multivibrator D*.L which produces output 
TI - Frequency multiplier with pulse feedback for low-frequency digital measuring instruments
JF - Measurement Techniques
DO - 10.1007/BF00861752
DA - 2004-12-06
UR - https://www.deepdyve.com/lp/springer-journals/frequency-multiplier-with-pulse-feedback-for-low-frequency-digital-a4i0Z5S4jQ
SP - 831
EP - 833
VL - 28
IS - 10
DP - DeepDyve
ER -