KitsGuru ICL8038 Monolithic Function Signal Generator Module DIY Kit Sine Square Triangle Educational Electronic Hobby Kit

ICL8038 pin functions: 1st foot, 12th foot: sine waveform adjusting terminal; 2nd foot: sine wave output; 3rd foot: triangle wave output; 4th foot, 5th foot: the frequency and duty cycle (or waveform asymmetry) adjustment; 6th foot: V +, the positive power supply; 7th foot: offset; 8 foot: frequency adjustment input terminal; 9th foot: square wave output. This is an open collector output terminal, work should take a load resistor to the corresponding positive power supply terminal from the pin, to get a TTL-compatible square-wave output, the load resistance must be connected to + 5V power supply; 10th foot: timing capacitor terminal; 11th foot: V-, negative power supply terminal or the ground. Use positive and negative power supply, 11 feet to the negative supply, the output waveform are symmetrical with respect to 0V; use a single positive power supply, 11 feet grounded, the output waveform is unipolar, uniform voltage is + VCC / 2; 13th feet, 14 Feet: Empty foot. The kits are designed for a frequency range is 50-5KHz, two bands with a switch S to switch, RP1 is the frequency adjustment, RP2 is the duty cycle adjustment, RP3 is a sine wave distortion adjustment. Circuit uses 12V single power supply, input from the X1; X2, X3 is a waveform output side, you can use oscilloscope to observe three output waveforms