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Diymore 그래픽 카드 LM3914 리포 배터리 용량 적색 녹색 청색 표시기 모듈 LED 전력 레벨 테스터 RC 완구
通常価格 46,500ウォン
販売価格 22,780ウォン
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LM3914 Graphics Card 3.7V Lithium Lipo Battery Capacity Red/Green/Blue Indicator Module LED Power Level Tester DIY Kit

Feature:
This is a DIY kit that requires buyers to assemble it.
The power display is to take some voltage and execute the percentage of the analog display segment, such as 3.7V lithium battery, take the lower voltage 3V, the upper limit is 4.2V, 4.2-3 = 1.2V, the lower limit of the voltage difference is 1.2V, that is, the battery is simulated.
The LM3914 can accurately detect the analog voltage, and 10 LEDs display, display the dot mode LED lights up 10, or individually illuminate the LEDs in a stripe pattern.
Display Description: The display battery voltage is displayed between the 10 file lower limits, representing 10% charge display for each lamp, representing 10 lamps showing charging range of 0%-100%; you can also change the single lamp display to display only one light. More power, single lamp power 4mA, full brightness 42mA.
Parameter:
Power supply: strip display full brightness 42mA, single light display 4mA
Measuring range: ordinary battery internal 2.4-20V
Color: Red, Green, Blue,
Display: multi-light bar display or single-dot display
Pcb board size: 45 * 14 mm
Need to display lithium batteries, lead acid batteries and other power batteries
Power adjustable display range is scientifically set battery discharge curve, direct support: single lithium 1S (4.2V) -4S (16.8V), lead acid 6V -12V, nickel hydrogen 3.6V -18V, nickel cadmium battery 3.6V -18V
Various high and low voltage battery display range adjustment:
1. Lithium battery:
The voltage of the single lithium battery after completion of discharge is 3V, and is 4.2V when fully charged;
1S corresponds to 3V (first lamp) to 4.2V (tenth lamp);
2S corresponds to 6V (first lamp) to 8.4V (tenth lamp);
3S corresponds to 9V (first light) to 12.6V (tenth light);
4S corresponds to 12V (first lamp) to 16.8V (tenth lamp);
Other series of voltages, etc.
2. Lead acid battery
6V or 12V lead acid batteries are generally:
6V corresponds to 4.8V (first red light) to 6.75V (tenth light);
12V corresponds to 9.6V (first red light) to 13.5V (tenth light);
The module is designed according to the above standard battery discharge range, which can accurately reflect the battery, so that the user can observe the state of the battery at any time.
Adjust the following methods:
Required equipment: Adjustable power supply, accurate panel display determines accuracy. Watch word screwdriver.
In the case of a single 3.7V lithium battery, the 3V low-end power supply is less, and the 4.2V is a full-power high-end power supply.
1, the adjustable power supply voltage becomes the required voltage, showing a high level 4.2v, connected to this board, there are two results at this time: one is not bright, one is full light or bright. At this time, the potentiometer of the plate 503 (50k) is slowly adjusted until the LED strip just lights up. When the clockwise direction is fully illuminated, multiple lights are off or counterclockwise.
2. Adjust the power supply voltage to the low end of the required 3V. The potentiometer of the adjustment board 502 (5K) only lights one LED, does not adjust the light clockwise, and turns several or all of them counterclockwise.
3. Repeat the first step two patiently. Usually adjust to the required display range twice.
Display mode A / P: full brightness linear / single light grid mode switch, the default is linear mode, the board reserves a switch pad, that is, the use of the pad can also become full optical linear mode, no need to solder point single light display
Note:
To adjust their voltage, follow the adjustment order, emphasize the high end, and then adjust the low end. Red is positive, then negative black, must not be reversed, this module is the maximum limit voltage DC 20V, please use anti-static welding or soldering station to pull the electric welding.
Package Included:
1 * LM3914 Lithium Lipo Battery Capacity Indicator Module