DocumentCode
2881001
Title
PWM Controller with Single Core Multivibrator
Author
Harada, Koosuke ; Sakamoto, Hiroshi ; Katsuki, Akihiko
Author_Institution
Department of Electronics, Kyushu University, Fukuoka, Japan
fYear
1979
fDate
26-29 Nov. 1979
Firstpage
258
Lastpage
264
Abstract
A new PWM controller with simple structure is presented. This controller consists of a modified transistor-core multivibrator having a single saturable core and is capable of changing the oscillation frequency with ease by a low control voltage. Accordingly, if this controller is applied to a small DC power supply or a feedback element of the switching regulator, a considerable reduction of the number of components is given in comparison with that of IC type. Furthermore, because the output signal has the nearly constant V/f ratio, the PWM controller is suitable for a simple speed control circuit of the small AC motor.
Keywords
AC motors; Circuits; Feedback; Frequency; Low voltage; Power supplies; Pulse width modulation; Regulators; Velocity control; Voltage control;
fLanguage
English
Publisher
ieee
Conference_Titel
Telecommunications Energy Conference, 1979. INTELEC 1979. International
Conference_Location
Washington, DC, USA
Type
conf
DOI
10.1109/INTLEC.1979.4793641
Filename
4793641
Link To Document