[i=s]This post was last edited by dontium on 2015-1-23 11:46[/i]Generally speaking, bipolar NPN transistor op amps have input clamps, such as the OP07, OPA227, and OPA277. The uA741 is an exception, w...
Battery boost, battery terminal voltage waveform is abnormal
I need to increase the input voltage of a single lithium battery from 3-4.2V to 40-50V, with a load current of 50mAmax. The voltage has ris...
As you probably know, ENOB ("Effective Number of Bits") and Effective Resolution are both parameters related to ADC resolution. Understanding the difference between them, and determining which one is ...
Before BenQ, no other manufacturer in Taiwan had made mobile phones. The specifications of personal computers were similar, but the specifications of mobile phones were controversial. HW, who has been...
Event: The company simultaneously released its 2017 annual report and the first quarter report of 2018. In 2017, the company achieved revenue of 8.886 billion yuan, a year-on-year increase of 48.01...[Details]
For STM32, there are two ways to reset the software: 1) Use the official software library The system reset function is directly provided in the stm32f10x_nvic.c file of the official software li...[Details]
Using Systick timer to achieve delay 1. SysTick timer characteristics The SysTick timer is a 24-bit down counter, that is, when vlue is decremented to 0, an interrupt is triggered and the load va...[Details]
We have come a long way from the 2G era, and now 5G is about to be commercialized. Suddenly, we realize that time has passed quickly, but technology has never stopped. The activation of 5G heralds ...[Details]
Recently, there was news that the US government asked Google to shut down the Android operating system for ZTE phones. After that, some people even imagined what the consequences would be if Intern...[Details]
In recent years, the application of high-brightness LED has developed rapidly, especially in signboards and traffic lights. For automotive applications, LED is also very attractive. Long life, shock ...[Details]
STM32 Watchdog Summary I have been adjusting the development board of Atom Brother for more than a year, and it is basically usable, but I still don't understand the working mechanism of some basi...[Details]
At this exhibition, Microsoft brought its flagship intelligent voice products - XiaoIce and Xiaona. In addition, the voice will be equipped with an intelligent face recognition system. Let's see ho...[Details]
If you do not use an external crystal on the STM32, the connection method of OSC_IN and OSC_OUT If you use the internal RC oscillator instead of an external crystal, please follow the following metho...[Details]
/*----------------------------------------------- Name: IIC protocol PCF8591 AD/DA conversion Content: Use DA input, digital tube display output digital quantity, LED display analog voltage size ...[Details]
Unfortunately, my serial port has some problems and I can't print information. I can only debug to view variables and see the values. Fortunately, there is not much AD conversion code, and I can use ...[Details]
//Environment: winavr+avr studio char temp=0; ISR(TIMER1_COMPA_vect )//interrupt function { // user code here temp++; if (temp==10) temp=0; PORTA=temp; DDRA=0xff; } void ...[Details]
On November 1, 2017, the General Administration of Quality Supervision, Inspection and Quarantine and the Standardization Administration of China announced 585 approved national standards and two n...[Details]
Recently, the incident of Orange Peel unlocking fingerprint recognition has been all over major social forums and media. Many mobile phones have not escaped this bug. Many people said that they felt ...[Details]
Analogue and Mixed Signal
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