Adjustable Duty Square Wave Generator

Overview

This square wave generator uses two potentiometers which can vary the frequency and duty cycle. This can drive a stepper motor square wave signal and can be used to control motors (PWM generator), adjust brightness in bulbs and LEDs or timers. It also features an adjustable pulse control circuit.

Specifications

• Dimensions: 31 mm x 22 mm
• Main Chip: NE555
• Input Voltage: 5 V DC to 15 V DC
• Signal Frequency: 1 Hz to 50 Hz, 50 Hz to 1 kHz, 1 kHz to 10 kHz, 10 kHz to 200 kHZ (depends on connection date jumper)
• Current:  ≥100 mA
• Output Amplitude: 4.2 V V-PP to 11.4 V V-PP (depends on input voltage)
• Output Current: 15 mA, Vin = 5 V; 35 mA, Vin = 15 V
• Maximum Output Current:  ≥15 MA