Overview:The main components of the product are ICL8038 signal generation chip, overbandwidth high-voltage amplifier, voltage regulator power supply, signal parameter setting circuit, input and output interface, etc. It can output sine wave, square wave (rectangular wave PWM), triangle wave (positive triangle wave, anti-sawtooth wave, positive sawtooth wave) signal. Output signal amplitude VPP adjustable, distortion THD adjustable, output PWM adjustable, frequency FRQ adjustable. Strong output drive capability. Can be used for a variety of related occasions as a signal generator.Features:A Signal generator capable of producing sine, triangular, and square wave outputs.The output signal frequency and duty ratio remain unchanged when the power supply signal changes by adding a stabilized power supply. The output signal is more stable.Add anti - connect anti - reverse protection for power input.Frequency shift setting the shift pin to 7 range.Frequency regulation is divided into fine adjustment and fine adjustment 2 multi - turn precision potentiometer, high precision of frequency control.Specification:Condition: 100% brand newWeight: 32g/1.1ozModel: SG-8038A. Function and use2.11. Cooling mode: natural cooling (the normal operating temperature is not more than 40 degrees).2.12. Use: can not be placed in other heating equipment, to avoid dust, oil mist, corrosive gas, humidity and strong vibration places. Flammable gases, conductive dust or liquids are prohibited.2.13. Operating temperature: -15~+45 c.2.14. Working humidity: 40%~90%.2.15. Permissible vibration: less than 10-55hz / 0.15mm2.16. Storage temperature: -20 to +65℃2.17. Space interference waves: no requirementB.Performance index parameters:1. Mechanical structure and electronic circuit parameters of the main machine3.1.1. Input voltage: DC-12-24v3.1.2. Input current and power consumption:Minimum standby current: 35MA/24VMaximum allowable operating current: 75MA/24VAllowable starting surge peak maximum current: 1A3.1.3 allowable input power ripple: 200MV3.1.4. Frequency adjustment range: 1hz-350khz, 7-gear dual-precision multi-turn potentiometer adjustment, high precision of frequency control.3.1.6.PWM duty cycle is adjustable from 5% to 100%3.1.7 square wave, PWM amplifier output VPP amplitude adjustable range: 0~VCC(power supply input voltage -2V).3.1.8. Adjustable range of output VPP amplitude of triangular wave sine wave amplifier: 0~2/3VCC(about 70% of the input voltage of power supply, the output amplitude can be increased if the requirement of distortion degree is not high). .3.1.9. Amplifier output signal current capacity 20MA/ circuit3.1.10. Triangular wave and sine wave signals straight out of the chip have the smallest distortion but weak driving ability. In addition, the low end of the wave type of this signal is not to the ground (that is, floating ground, there is bottom noise, raise a certain amplitude on the ground wire and then waveform. All ICL8038 chips are like this. If you want to use these two interfaces, you should pay attention to whether they match the external circuit of the user.3.1.11. Module startup time. The time between the module being powered on and the normal signal output. The output time of the amplifier is relatively long, ranging from 2 to 3 seconds. During this time, the waveform amplitude increases from slow full to set value. This amplifier can play the role of power buffering. Reduce the impact of terminal.Operating instructions and others:A. Sine wave debugging:1. Adjust PWM to 50%.2. The frequency FRQ jumping pin and potentiometer are set to OK.3. THD distortion -LH2 potentiometer has small symmetrical distortion in wave mode.4. VPP potentiometer output amplitude up and down without cutting the top.B. Square wave and PWM debugging:1. Setting of frequency FRQ jumper needle and potentiometer is OK.2. VPP potentiometer output amplitude upper and lower top edge not hypotenuse. Try to be a right Angle.3. Duty cycle required for setting square wave in PWM potentiometer.C. Triangular wave debugging:1. Adjust PWM to 50% (positive triangular wave)2. Set PWM to <50% (positive sawtooth wave)3. Set PWM to >50% (anti-aliasing wave)4. The frequency FRQ jumping pin and potentiometer are set to OK.5. VPP potentiometer output range does not cut the topD. Some basic concepts about signals.AC signal: signal wave energy alternates between GND ground wire and GND ground wire.DC signal: signal wave energy changes alternately above GND ground wire.FRQ: F = 1 / TPWM DUTY = HT / + LT (HT) * 100%Different wave types, the various value calculation formula is different. To consult the table calculation, or with the instrument measurement. There are many types of V values, commonly used as follows:PEAK value, PEAK value VPP, average value VAVG, true effective value T-VRMS, effective value/RMS VRMSPackage List:1 x Signal Generator ModuleNote:1. Ensure the power supply is between 12-32V. If the battery is powered, the full voltage