Showing posts with label display. Show all posts
Showing posts with label display. Show all posts
Wednesday, November 19, 2014
7 Segment Display Digital Dice with IC 4026
7 Segment Display + Digital Dice with IC 4026 -
Composite Materials:
1. IC 555
2. IC 4026
3. 10k ohm resistor (1buah), 100Kohm (1 piece) or replaced with a potentiometer 100k ohms, 220 ohms (7 pieces if necessary)
4. 10 uF capacitor (1 piece)
5. Button press / push button
6. 4.5V battery
7. Jumper cables sufficiently
| 7 Segment Display + Digital Dice with IC 4026 Image |
Assemble steps to Breadboard:
- After stringing understand 555 experimental trials this time it will be easy just follow the schematic drawing shown earlier, and results in the breadboard like this:
- Pushbutton has 4 feet where there are 2 pieces that connect pairs of legs.
- If the battery voltage exceeds 6V, then 7 before going to the 220 ohm resistor required segment or more. If using 4.5 V resistor can not be used.
- Play-turn potentiometer to obtain the desired rate of addition of digits.
- If speed digit changes very quickly, then the circuit can be used as "ELECTRONIC DICE". So when the button is pressed it will stop the numbers digit number we do not expect before.
There is info of 7 Segment Display + Digital Dice with IC 4026
Thursday, November 13, 2014
LED Sound level display circuit by using IC LM3915
This circuit is about audio sound level LED display, indicator, monitor or you can say it “Audio VU (Volume Unite) Meter”.
This is a simple audio sound level LED display circuit diagram. The circuit is completely based on a single ic LM3915 from National Semiconductor. The LM3915 is a monolithic integrated circuit. It displays the audio sound level in terms of 10 LEDs and providing a logarithmic 3 dB/step analog display.
This is a simple audio sound level LED display circuit diagram. The circuit is completely based on a single ic LM3915 from National Semiconductor. The LM3915 is a monolithic integrated circuit. It displays the audio sound level in terms of 10 LEDs and providing a logarithmic 3 dB/step analog display.
Audio sound level display circuit diagram
 |
| Fig: Circuit diagram of sound level display using ic LM3915 |
The audio sound level LED display circuit can operate from a single supply 3V to 25V. But I suggest to use 9-12V. LED brightness can be controlled with a single pot( variable resistor) as shown 10K ohm in the circuit. Connect the audio input signal in Pin-5 of LM3915 from output of a audio device like output of audio amplifier or any other source.
The Pin-9 of LM3915 is to select dot or bar mode display. To make the circuit moving dot display instead of a bar graph display disconnect the Pin-9 from +V.
Subscribe to:
Posts (Atom)
