|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||318/464 ; 307/519 ; 324/78R ; 324/166|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 2 인용 특허 : 7|
A circuit arrangement for generating a useful direct voltage signal associated with the frequency of an alternating current signal serves, in particular, to regulate the synchronism of an electric motor. It includes a comparator circuit (7) which converts the two opposite polarity half-waves of the alternating current signal of a tacho coil (2) into pulses whose edges trigger a measuring and control circuit (18) which generates direct voltages corresponding to the half-period durations of the alternating current signal measured from the respective zero p...
A circuit arrangement for generating measurement signals associated with the frequency of an alternating current signal, for measuring and regulating the synchronization of an electric motor, comprising: a measuring and control circuit; and a comparator circuit which converts the two opposite polarity halfwaves of the alternating current signal into pulses whose edges trigger the measuring and control circuit to generate the measurement signals in the form of digital signals or direct voltage signals, wherein the measurement signals correspond to the hal...