Metronome Circuit


Posted on Feb 5, 2014

This circuit uses a couple of Op-amps to produce an interesting sound effect. The left hand CA741 is wired as a standard astable and produces the timing pulses, controlled by C1, R2 and VR1. The output is fed via C2 to the second op-amp and is also direct coupled via the zener ZD1 to Q1. The right hand CA741 is configured as an integrator, its pur


Metronome Circuit
Click here to download the full size of the above Circuit.

pose being to distort the output pulse from the first op-amp. This produces a ringing effect on the output pulse and gives the circuit a characteristic "tick" sound. A sound sample recorded under Audacity on PCLinuxOS is shown below. The emphasized ringing can be seen in the enlarged view above. The output pulse at the first op-amp will cause the zener and Q1 to conduct on every positive transition. The 1k resistor R8 then acts as a low impedance shunt at the input of the integrator and produces a characteristic "tock" effect. R8, R7, R9, C3 and C4 may all be adjusted to tailor the sound effect.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Low battery indicators with LED
Optical-ttl-coupler
Audio Triangle Square Wave Generator Using Op-Amp
Prototype: Openbench Logic Sniffer logic analyzer
ADUC814 1.3MIPS 8052 MCU + 8kB Flash + 6-Ch 12-Bit ADC + Dual 12-Bit DAC
RCEN fuse bit blower for the AT90S1200 8Bit RISC CPU
Lessons on Electric Circuits Experiments
ROM and RAM Emulator for 8051
Spectrum Keyboard Buffer
Output 85 to 145V adjustable power supply circuit
Infrared remote control a dimming circuit
With a 7-Channel Smart Temperature Sensor MAX6698 circuit diagram



Top