Square wave oscillator 1Hz - 100kHz

Simple little square wave oscillator. The oscillator can generate approximately the following frequencies: 1Hz, 10Hz, 100Hz, 1kHz, 10kHz and 100kHz. The generator is based on the famous 555-timer IC. The frequency is set with a jumper that patches in different capacitors. Other frequencies can be produced by mounting capacitors with other values. The kit includes all components, circuit board and a little plastic box.

Supply voltage: 5 - 18V