DIY Simple PCL82 Low Voltage (12V) Tube Amplifier
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- Опубликовано: 23 дек 2022
- This project is sponsored by PCBWAY www.pcbway.com/
This time I will describe to you how to make a very simple single tube amplifier that also works at low voltage and is powered by 12V DC. Valve amplifiers produce greater amounts of total harmonic distortion, but this type of distortion (2nd harmonic) is not as disturbing to the ear, and is perceived as a "warm pleasant sound", especially when playing instruments where this amplifiers are still indispensable.
Device is very simple to build and consist only a few components:
- PCL82 Vacuum Tube
- DC-DC boost module
- 7815 Voltage stabilizer
- 1M potentiometer
- 220V/6V mains transformer
- and Speaker 3W/4Ohm
The output power is about one watt without unpleasant audible distortions, which is quite sufficient for the purpose for which I built it. Namely, I will use this amplifier in my next simple radio projects as an audio output part. However, with high-sensitivity speakers with a light membrane with a large surface area, this power is quite sufficient for normal listening.
The device is built into a suitable box made of 5mm PVC board and lined with self-adhesive wallpaper, and it also serves as a speaker box.
Detailed instructions, schematic diagram, and pictures at:
www.hackster.io/mircemk/diy-s...
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by mircemk
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#tube #amplifier #electronics #PCBWay 
Наука
Много добре се е получило, браво приятелю🙌🙂
Поздрави от България🙋♂️
Фала :)
Ne kadar çok ve güzel videolarınız var teşekkürler
Excellent project 👍
Very good audio.
Hey Mirko, I built your design and it works great!
I share your video on my channel
Thanks, another proof that the amp works great
@@MirkoPavleskiMK : Sorry no it does not I build it and the result is really bad. There must be something wrong with your schematic if it works for you but for others not.
Muito bom o amplificador parabéns, bom natal para você e família saúde e paz. Abçs.
Thanks a lot :)
Vacuum tubes operate as a Class A amplifier.
You can probably use two separate tubes for such a project as well. Wonder how to calculate component values for other tubes. Maybe you can make push-pull also if two transformers are used in the output?
fun!
Chapeau! Isnt there any noise from the dc-dc converter?
Hi nice project where did you get the transfer? Can you give me a link? Thanks for your help.
Hi, I build the amp according to your schematic but have a lot of distorsion. I need to put the potentiometer on very low position else my speaker is clipping. Any idea what went wrong?
Hi, your boost convertor board can give up to 60VDC , Why don't you try it? I think it will increase the output power.
Thanks for the suggestion, right at 60V you get a bit of power output
On your speaker it is written 8ohms 10w , why did you tell it's 3W 4 ohms?
If this unit is using the Low Voltage Vacuum tubes developed in 1957 for use in car radios when the transistors of the day were not ready for prime time then the Heater voltage should be 12V and the B+ should also be 12V.
This is really an advertisement for pcb way!
Did you really think 40V input for a 7815 is o.k.?
yes, it is ok
@@MirkoPavleskiMK Hello my friend, I was looking for a data sheet for a 7815 where the input voltage may be over 35 V. Unfortunately I didn't find any. can you send me a link?
@@RalfWeber-tb3my max input in my Pdf is 30V!!!
7815 - 40V???
Yes, the 7815 has a 45V input limit
I would like to try to build it myself, but I think that your schematic is not correct. The pins of the PCL82 are different in the datasheet, and your schematic shows the cathode of the pentode connected to +40V .
Pin numbers are correct, bit pin 7 is G2, and 8 is kathode of pentode. The inside of the tube is incorrectly drawn. Sorry, my mistake.
I'm just starting out in tube electronics, so are these connections correct 4:00 ? Thank you.@@MirkoPavleskiMK
@@dx835 Yes, just don't look inside the tube, just connect the pins according to the given diagram
@@MirkoPavleskiMK Thank you for the clarification.
If i use PCL81 will be the same ? because the kathode is common in the circuit !