Tone Audio | Electronic Project Circuits

Posts Tagged ‘tone audio’

Morse Buzzer Alarm or Continuity Tester by IC 4011

This circuit uses the integrated circuit CMOS number IC 4011 pretend Square Wave Oscillator , which touch buffer change output (which compose Complementary pair of transistors) for a loudspeaker next by bass keen in the sound can control with potentiometer or 10 K ohm when we wasp the circuit suits power supply as a result , be , sound generator get , and in other words we can use to are Continuity Tester by use probe 2 reach instead of itch knock the password there. In addition Input pin , that still no use of , gate CMOS every a pin join with negative supply for feed prevent all noise.

Be the first to comment - What do you think? Posted by admin - November 24, 2008 at 9:12 am

Categories: Audio diagram, Digital, Meter Tags: electronic test equipment, IC 4011, Piezo-Buzzer, tone audio

Fluid Level Detector using LM1830N

The IC is ideal for detecting the presence, absence or level of water or other conducting liquids. A detector determines the presence or absence of fluid by comparing the resistance of the fluid with the IC’s internal reference resistance. An AC signal is used to prevent plating of the probe. When the probe resistance increases the loudspeaker will emit a 500Hz tone. Alternatively an LED could be connected.

Source: http://www.next.gr/inside-circuits/
Fluid-Level-Detector-LM1830N-l5866.html

Be the first to comment - What do you think? Posted by admin - November 17, 2008 at 5:59 am

Categories: Audio diagram, Detector Tags: Fluid Level Detector, level detector, tone audio

Simple Tone Oscillator Generator by 2N2222

This is Simple Tone Oscillator Generator. It is use transistor 2N2222 and 2N2907 be main part. By control tone sound with R2 – 50K and use 8ohm size. Detail other loudspeakers have a few , request friends see in the circuit please yes.