The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound, such as filtering or distortion. Instead, a frequency division system produces outputs with half the input frequency and its fourth. That is, it produces frequencies of one and two octaves lower than the input frequency which are then mixed with the input signal. For this device to work properly, the circuit must be somewhat more complex than one might expect initially for reasons that we will analyze below. However, although the design of the circuit is relatively simple, the sound output it produces is excellent. The mechanical construction of the unit is of a pedal type, allowing you to activate or interrupt the foot effect. The two signals produced by the circuit have separate amplification control each, so they can be mixed with the original signal at any desired level.

The doorbell sound circuit was two-tone sound. With the switch S1. working of the circuit, IC1 is a frequency division circuit, and a sound frequency generator came out. by C1, R1 is the frequency generator. This audio signal from pin 7 and pin 4 to pin 1 and pin 8 of the IC2a, IC2c respectively. The IC2b of a frequency converter to control IC2c. Wh

The following circuit shows about Schematic Diagram Of LED Sequencer. This circuit based on the 555Timer IC. Features: 555 timer circuit to debounce  a mechanical switch, 555 timer circuit to produce clock  pulses, pulldown  resistor, 4017 decade counter/divider circuit for frequency division, frequency divider and timepiece (wa