Free electronic circuit design and schematic diagram
Phase-locked loop is very common in telecommunication, control, and other electronic application. PLL can be used to demodulate FM signal, produce a stable clock signal, or to recover a synchronization signal from noise. Many single chip integrated circuits (IC) are produced for this PLL system, and LM359 is one of them. This PLL is capable to operate up to 5MHz, […]
Read more
Phase-locked loop is very common in telecommunication, control, and other electronic application. PLL can be used to demodulate FM signal, produce a stable clock signal, or to recover a synchronization signal from noise. Many single chip integrated circuits (IC) are produced for this PLL system, and LM359 is one of them. This PLL is capable to operate up to 5MHz, […]
Read moreBelow is an overview of class D audio amplifiers video tutorial. On this video will be explained about Class D audio amplifiers, power efficiency, and power consumption. On this device, using calculation on the video, the amplifiers has an accurate efficiency about 90%. On the real word application, Class D audio amplifiers has a good power consumption. For more information […]
Read moreBelow is video tutorial about closed loop PWM PC fan controller. Unlike the other controller, in this circuit the potentiometer would not directly changes the duty cycle instead it set an RPM reference value. On the first state is to read the potentiometer value and to translate it to RPM value using Analog Digital Converter then it read the current […]
Read moreBelow is video tutorial about PWM RPM DC fan regulator with feedback. The fan speed rotation can decrease if the filter is filled with dirt and to much dust on the fin. On this video explained that we can changed the speed of the fan with changed the cable position on the IC. If the cable is on the no […]
Read moreBelow is video tutorial about PWM fan controller with pulse stretching method to get RPM feedback. On this video explained there are three channel on the oscilloscope. The yellow channel is directly connected to gate of the Mosfet. The green channel is the feedback of the fan. Finally, the blue channel. Whenever the blue channel is high, the peak get […]
Read moreBelow is video tutorial about voltage controlled PWM generator. This circuit consist of an electronics component such as potentiometer, capacitor, triangular wave generator, and comparator. The reference DC voltage can be changed using the potentiometer. On the oscilloscope is shown a triangular wave (green line), square wave (yellow line), and the blue line is the DC voltage reference. Watch the […]
Read more