Measuring AC voltage and frequency1. Measure voltage1. Signal transformation method:
(1) Measure the amplitude point by point and then perform integration operation; this requires a high-speed AD conv...
I encountered a very strange problem. I used SPI to read and store external EERPOM. When the speed was set below 600k, some of the stored data was lost. When it was over 600k, the storage was normal. ...
[size=4]When COMS meets TTL, there is only confusion at this stage, because there is no rational understanding of the connection and difference between the two. For this reason, let's make a small com...
Lua has been ported to the VC version of raw-os. For other CPU versions, you can just copy it, compile and link it. As for what Lua is, I won't say much. Download address: [url]http://www.raw-os.org/D...
Images in science fiction movies often break through the limits of reality, such as in the movie "Minority Report." Tom Cruise uses a multi-touch screen to browse information. Capacitive sensing te...[Details]
AD8205 is
a single-supply high-performance differential
amplifier
launched by
Analog
Devices of the United States
. The typical single-supply voltage is 5V, and its common-mode volta...[Details]
A standard cell
is an electrochemical
cell
used as a voltage reference standard in many electrical standards laboratories
. If properly maintained, standard cells are very stable. The ...[Details]
Product series: PB-B-RS232/485 interface (hereinafter sometimes referred to as "interface") is a product in the PROFIBUS bus bridge series.
The main purpose of the bridge series ...[Details]
Xiaomi, a well-known Internet phone in mainland China, won a million-unit order contract from China Unicom on November 20 last year, which made Xiaomi famous in mainland China. In April this year...[Details]
Don’t just look at the power when choosing a power supply
We know that a power supply with a low rated power can hardly meet the power supply needs of the system, which may cause frequent free...[Details]
Designing low power circuits while achieving acceptable performance is a difficult task. Doing so in
the RF
bands increases the challenge dramatically. Today, nearly everything has wireless...[Details]
If users want to extend the effective use time of the battery, in addition to ensuring the quality of the charger, correct charging techniques are also essential. Here are 14 tips for charging mobile ...[Details]
(1) Open circuit voltage of the battery
(2) Internal resistance of the battery
(3) Battery operating voltage
(4) Charging voltage
Charging voltage refers to the voltage applied ...[Details]
No matter which processor you are learning, the first thing you need to understand is the registers and working mode of the processor.
ARM has 37 registers, including 31 general registers and ...[Details]
High-voltage switches are important control equipment in power systems and play an important role in the safe operation of power grids. The resistance of the switch conductive loop is an important tec...[Details]
Engineers usually use multiple groups of cheap small-capacity batteries in parallel to achieve the larger battery capacity required by UPS. If multiple groups of batteries with poor performance uni...[Details]
LED lamp beads are voltage-sensitive devices and capacitive loads. In actual work, the current accuracy is required to be high, which is one of the main issues affecting the luminous efficiency and...[Details]
Fast charging of batteries for electric vehicles is an important topic in the research and development of electric vehicles. Although many practical charging devices or commercial chargers have the...[Details]
1. Problems with the current transformer maintenance method
The current maintenance method for transformers is to deal with defects during regular maintenance and patrol inspections. There...[Details]
Microchip MCU
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