Led Dispaly Level Meter | Electronic Project Circuits

Posts Tagged ‘led dispaly level meter’

Simple LED light based music using LM318

This is a simple circuit. Music can change the LED light level gamut.
Operation of this circuit is a circuit op amp IC1 / 1-IC1 / 5 compared to the characteristics of the circuit voltage.It has one pin acts as a voltage reference pin.That the pressure from the supply voltage and divide between R1 and R7 pressure used in this circuit will be compared with the pressure drop across R7.
As the 2V input side, it will be R2, R3, R4, R5, R6 series, keeping the pressure drop across.Each R as well.
If there is pressure to 5Vp-p is the voltage across R2 = R3 = R4 = R5 = R6 = 1V.The voltage reference, we have 2V. IC4 circuit compares the measured voltage at the input pin of IC4 is 2V.Which is equal pressure on the leg or legs plus the output of IC4 will not flow to drive the LED light will be more pressure input into this.IC4 to make work. The next LED arranged in the order of the input voltage.

Be the first to comment - What do you think? Posted by admin - November 19, 2010 at 10:26 pm

Categories: LED Flasher, Lighting, Meter Tags: led dispaly level meter, light music, sound lighting

LED VU meter increase

The circuit will increase the input signal to a voltage signal circuits as much as two times.To affect the audio signal into more valuable.This makes all the transistor amplifier to drive LED is very.And emit light much more.
When raising the power circuit.And the input signal to act through the VR1 to adjust the sound more or less.Then passed to the C1 signal coupling.Then the signal goes into the circuit to add voltage,by the D1 and D2. So D1 and D2, which will make Direct Contact Fire signal into a DC voltage and power split and split positively delete files together.Then filtered to smooth power with C2.The first part of the signal will result to the Q1 R1 bias current expansion work to drive LED1-LED5 to light.The remaining signal is sent through diodes D3, D4 and D5.This will serve to break the sound signal to gradually decrease, respectively. To forward to the transistors Q2-Q4, each level of the signal strength coming.Then expand to the LED current to light the rhythm music.

Be the first to comment - What do you think? Posted by admin - October 2, 2010 at 9:19 am

Categories: LED Flasher, Meter Tags: led dispaly level meter, led vu meter

Balance display circuit by BC147

This Balance display circuit,be the circuit shows the equilibrium in the sound in stereo system. By indicate that stereo system signal on the left and right have or not is a signal equal ? Which if signal both of channel left sound and right channel equilibrium or balance prevent. The LED bilateral switch off but conversely if 2 both of channel sounds are rough LED any one stick bright.
When one party power circuit. And input audio stereo signal into the input box if the left and right channel audio signal equal to the Q1 and Q3 the same stream. There was no difference in the LED voltage on both be ill. If the signal is not balanced. Hypothetical signaling through the right channel signal rather than left to the LED1 and LED2 light off signal indicating that the signal over the right-left channel.

Be the first to comment - What do you think? Posted by admin - June 17, 2010 at 4:18 am

Categories: Audio diagram, Detector, LED Flasher, Meter Tags: led dispaly level meter, sound level meter