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In this paper a new zero voltage switching bidirectional dc-dc converter is introduced. This converter consists of flyback and forward transformers and only one main switch in primary side and one main switch in secondary side of transformers. Auxiliary circuits in this converter consist of a switch and one clamp capacitor. These circuits not only absorb spikes across the switches but also provide...
This paper proposes power load controlling by using PWM signal to on-off an electronic switch. With this technique, load current can be easily adjusted. For PWM signal, it is derived by using PLL. With the property of PLL, PWM signal whose frequency is synchronized with that of load power is generated. Consequently, phase of signal which is fed to load can be controlled all range of 360 degrees or...
This paper describes a DC motor drive using a pulse width modulated (PWM) signal and tachometer feedback. The PWM and analog-to-digital capabilities of a microcontroller are used to realize a very inexpensive and efficient controller. The design of the entire system, as well as PCB layout are explored. Manufacturing considerations for the entire system are also presented.
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