ULN2003 is a high-voltage, high-current composite transistor array consisting of seven silicon NPN composite transistors. Each pair of Darlington is connected in series with a 2.7K base resistor. It can be used with TTL and CMOS circuits at 5V operating voltage. Directly connected, you can directly process data that was originally processed using standard logic buffers.
51 MCU is a general term for all MCUs compatible with Intel 8031 ​​instruction system. The first ancestor of this series of MCUs is Intel's 8004 MCU. Later, with the development of Flash rom technology, the 8004 MCU has made great progress and become one of the most widely used 8-bit MCUs. Its representative model is ATMEL's AT89 series. Widely used in industrial measurement and control systems. Many companies have launched 51 series compatible models, which will occupy a large number of markets for a long time to come. 51 single-chip microcomputer is a single-chip computer that is the basic introduction, or the most widely used one. It should be noted that the 51 series of single-chip microcomputers generally do not have self-programming capabilities.
Typical application circuit diagram of stepping motor driven by 51 single chip ULN200351 single-chip ULN2003 drive stepper motor - _ typical application circuit diagram. The stepper motor has 6 leads arranged in the following order: 1: red, 2: red, 3: orange, 4: brown, 5: yellow, 6: black. Driven by the 51-drive ULN2003 method.
This stepper motor has a drive voltage of 12V and a step angle of 7.5 degrees. A 360 degree circle requires 48 pulses to complete.
The driver of ULN2003 directly uses the 5V voltage of the single-chip system. The possible torque is not very large. You can increase the driving voltage to 12V by yourself.
Dust Explosion Proof Motor,Explosion Proof Induction Ac Motor,Special Explosion-Proof Motor,Dust Explosion Protection Motors
Yizheng Beide Material Co., Ltd. , https://www.beidevendor.com