本系统需要多个电源，单片机使用+5V稳压电源，AD转换器，D/A转换器

This system requires multiple power supplies. The single-chip microcomputer uses +5V stabilized power supply, AD converter, D/A converter, op amp, etc. require ±15V stabilized power supply. Although the power supply is simple, the regulated power supply plays a very important role in a high-precision system. After conducting the research, the following scheme was reached. <br>As shown in Figure 6, the power supply is first isolated by transformer voltage conversion, bridge full-wave rectification, capacitor filtering, and then generates stable voltage +15V, -15V, +5V through a three-terminal fixed output integrated voltage stabilizer, inside the voltage stabilizer The circuit is composed of a constant current source, a reference voltage, a sampling resistor, a comparison amplifier, a regulator, a protection circuit, and a temperature compensation circuit. In order to improve the ripple characteristics, add a capacitor at the input end. In order to improve the transient response of the load, a capacitor is added to the output terminal. <br>Three-terminal integrated voltage regulators 7805 and 7815.7915 are used to obtain stable voltages of +5V and ±15V respectively, and then the OP07 is added to the power FET to form an expansion circuit, which can provide an upper limit current of 2000mA. Power supply circuit realized by this method Simple, stable and reliable work. Regulated power supply is an indispensable part in physical design, but in order to simplify the circuit when using Proteus simulation, this module is replaced with the excitation voltage that comes with the software.

The system requires multiple power supplies, the single-chip machine uses a 5V regulator power supply, AD converter, D/A converter, transport and release, etc. need a taxi 15V regulatory power supply. Although the power supply is simple, it has a very important role in high-precision system. The following scenarios were developed after the study.<br>As shown in Figure 6, the power supply is first isolated by transformer voltage, bridge full-wave rectifier, capacitive filter, and then through a three-end fixed output integrated regulator to produce a stable voltage of 15V, -15V, 5V, the internal circuit of the regulator by constant current source, reference voltage, sampling resistance, relative amplification, adjustment tube, protection circuit, temperature compensation circuit, etc. To improve the pattern portability, the capacitor is added to the input. To improve the transient response of the load, the capacitor is added to the output.<br>Using the three-end integrated regulator 7805 and 7815.7915 respectively to obtain a stable voltage of 5V and taxi 15V, and then the OP07 increase power field effect tube to form a flow expansion circuit, can provide the upper current of 2000mA. The power supply circuit realized by this method is simple, stable and reliable. The regulator power supply is an essential part of the physical design, but in order to simplify the circuit with Proteus simulation, this module is replaced by the excitation voltage that the software brings.

The system needs multiple power supply, MCU uses + 5V regulated power supply, AD converter, D / a converter, operational amplifier needs 15V regulated power supply. Although the power supply is simple, it plays a very important role in high precision system. After the research, the following scheme is obtained.<br>As shown in Figure 6, the power supply is isolated by transformer voltage transformation, bridge full wave rectification, capacitor filtering, and then generates stable voltage + 15V, - 15V, + 5V through three terminal fixed output integrated voltage regulator. The internal circuit of voltage regulator is composed of constant current source, reference voltage, sampling resistance, comparison amplifier, regulator, protection circuit, temperature compensation circuit, etc. In order to improve the ripple characteristics, a capacitor is added to the input. In order to improve the transient response of the load, a capacitor is added to the output.<br>The three terminal integrated voltage regulators 7805 and 7815.7915 are used to obtain stable voltage of + 5V and ± 15V respectively, and then the power field effect transistor OP07 is added to form a current spreading circuit, which can provide the upper limit current of 2000mA. The power supply circuit realized by this method is simple, stable and reliable. Regulated power supply is an essential part in the physical design, but in the use of Proteus simulation, in order to simplify the circuit, this module is replaced by the excitation voltage of the software.<br>