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Controlled rectifiers are widely used in power system excitation and industrial control devices. At present, most of the controllable rectifier devices used in China adopt analog control, the given is generally a voltage signal, and the given method uses a potentiometer or a non-contact ma...
◆GDD-1C digital potentiometer adopts eight-bit single-chip microcomputer as the core, with simple hardware, high reliability, high precision and perfect performance. The control and stabilization accuracy are both within 0.2%, and the actual observed stabilization accuracy is within 0.1% around. It has two start-up reset functions. One is power-on reset, it automatically gives the selected voltage; the other is external reset, after the system trips, in order to prevent the rapid rise of voltage willThe tripping signal (can use the normally closed contact of the closing switch (preferably via a small intermediate relay)) is introduced as an external reset signal, after resetvoltage Return to the voltage level selected on power-up. ResetVoltageCan be selected with the small toggle switch in the box, with maximum outputVoltageVe0%, 4%, 8%, 12%, 16% (Atype) and 0%, 10%, 20%, 30%, 40% (Type B) and 0%, 4%, 8%, 12%, 16%, 20%, 24%, 28%, 32%, 36%, 40%, 44%, 48%, 52 %, 56%, 60% (Ctype) and 0%, 44 %, 48%, 52%, 56%, 60%, 64%, 68%, 72%, 76%, 80%, 84%, 88%, 92%, 96%, 100% (D< span style="font-size:18px;">type) four options are available to suit different needs.
GDD-1C digital potentiometer is a common type, and the light/dark time ratio of a single-color LED is used to roughly display the voltage output size. A, B, C type rise and fall time is about 45 seconds; D type is about 7.5seconds, and the rise time is about 4 seconds.
◆In addition to meeting the requirements of general electronic components for the surrounding environment in the application of low-voltage electronic control equipment, input signalrequiredAs follows:
VIN: (Ve+2V)≤VIN≤20V,Rated output≤10V, 12V is recommended.
How to use
GDD-1CNormaltype digital potentiometer itself is a small plastic 50×85×20mm Square box, there is an indicator light and two built-in increase and decrease buttons under the cover. There is a row of wiring sockets on the left side of the cover, which must be connected correctly according to the wiring diagram; there is a pair of φ3 mounting holes on the opposite corners, which can have M3 screws or Self-tapping screws are installed on the base plate near the control object. There is a set of selector switches in the lower right corner to select different power-on reset voltages .
Atype, Btype setting method is as follows:
◆The position of NO1, NO2, NO3 and NO4 is OFF and select 0 %.
◆Select 4(10)% for the position of NO1 ON.
◆The position of NO1 is OFF, and the position of NO2 is ON, select 8(20)%.
◆NO1, select 12(30) % for NO2 position OFF and NO3 position ON.
◆NO1, NO2, NO3 position OFF, NO4 position ON select 16(40) %.
C, DThe type is as follows:
◆ The positions of NO1, NO2, NO3, and NO4 are OFF as 0 and ON as 1 to form a 4-bit binary code 0~15, and NO4 is the high bit.
◆binary 0~15 correspond to C type respectively: 0%, 4%, 8%, 12%, 16%, 20%, 24%, 28%, 32%, 36%, 40%, 44%, 48%, 52%, 56%, 60%; DType:0%, 58%, 61 %, 64%, 67%, 70%, 73%, 76%, 79%, 82%, 85%, 88%, 91%, 94%, 97%, 100%.
