Active crystal oscillators usually have four or more pins, with a built-in oscillator chip. They are complete oscillators that can start oscillating as long as the power is turned on. They are general
I happen to have a 12F683 microcontroller in my hand, and I want to realize the timed output PWM, but I have no idea about this. Which great god can help me write a routine in C language? I want to le
This article discusses the PCB layout of a power supply circuit that generates a regulated 3.3 V rail from a small solar cell. My goal in this project was to create a very simple, very compact circuit
The number of 3G mobile phone users worldwide exceeds 100 million 2006-6-28 According to data released by the Universal Mobile Telecommunications System (UMTS) Forum on June 13, the number of third-g
1. The bq24650 output voltage is abnormal and cannot be chargedNow I have a problem. The connection of bq24650 is as shown in the figure. The setting is 6V input and 4.2V output. But if the input volt
[i=s]This post was last edited by DavidZH on 2019-5-1 16:06[/i] As an electronics enthusiast, DIY is inevitable. As the saying goes, a good tool is a must. I have been paying attention to an ultrasoni
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