mic preamps with reverb and delay
This microphone preamp with reverb and delay, is very useful for videorockolas with Karaoke, it gives the necessary effect to the voice, and makes it more attractive.
Video tutorial showing the process that circuit assembly
Due to the success of the video jukebox, manufacturers have begun to enrich the machine with other services such as: Radio, TV and Karaoke. For the latter audience for this project, which aims to give a sound more attractive to the karaoke singer's voice. The reverb and delay, are basically signal delays, added to the original sound, which give depth to the sound.
materials for this project are very economical with the exception of the integrated ES56033E , which can be supplied on Littlediode.com in local stores is somewhat limited. Remember to print in addition to the printed circuit mask to have her phone components when assembling the card.
After printing the printed circuit on Bakelite, the technique of ironing , or screen printing technique , proceed to put all the resistors and jumpers (jumpers .)
Weld correctly, you must join welding, soldering and the workpiece at the same time. Remember that the weld quality depends on the success of any electronics project it undertakes.
Although not essential, is recommended to place a 16-pin base for the integrated circuit. This is useful if you want to change it to malfunction or any other reason, can do so quickly and without damaging the tracks, as one integrated removing many feet is no easy task.
The use of connectors is very convenient at the time of maintenance of the circuit, or disassembled for mounted on another unit. We used molex connectors are of good quality and very aesthetic. If you do not use connectors, you can solder wires directly to the PCB holes.
2N5551 transistors (NPN) are widely used for low noise preamplifiers. Double check the position before welding mask looking at the components.
This circuit operates on 12 volts DC, and support up to 50v ceramic capacitors, for this is not specified voltage. In addition, all ceramic capacitors so as polyester, are above this voltage.
We can see the polyester and ceramic capacitors placed. They have no polarity. To view the photos larger, click on them.
Now put the electrolytic capacitors. These are polarity. Components in the mask shows the direction of the condenser, and condenser brings a strip that shows the negative. Addition when new, bring negative leg shorter.
C5V6 zener diode is a diode 6 volts. It feeds the integrated circuit, since the ES56033E only needs 6 volts to operate. The 12v preamp is attached to the integrated circuit of reverb and delay.
We put
50K potentiometers and wash the card on the side of the tracks with thinner, to prevent short welding particles that can be attached to the PCB.
ES56033
The generator is an echo effect which includes in its interior, a VCO (voltage controlled oscillator) which can be adjusted to the desired frequency through an external resistor and capacitor. It also contains a converter D / A,
(adaptive delta modulation), two low pass filters and a 32KB SRAM.
To feed this circuit, must build a single source, which is in the PDF of this project. The current consumption is only 300 milliamps and voltage transformer can be 10 to 12 volts AC.
>>> Download here << < The PDF file with information and forms for joining the microphone preamp with reverb and delay.
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