![tube power amplifier tube power amplifier](https://hometheaterhifi.com/wp-content/uploads/2017/03/audio-research-vt80-tube-power-amplifier-fig1.jpg)
![tube power amplifier tube power amplifier](https://m.media-amazon.com/images/I/412PjtXvPEL._AC_SX425_.jpg)
TUBE POWER AMPLIFIER PLUS
The resulting controller is very simple-a $25 Arduino module, a couple of dual op-amps, a few other components, and a 5-VDC power supply plus some opto-isolated switches (see Photo 1). With the Maker Movement in mind, I thought that I would use the Arduino - a common open-source microcontroller module-to build an automatic power controller for a tube power amplifier. This trend is fueled by technologies such as 3-D printing, robotics, social networks, open-source software, cheap sensors, and inexpensive microcontrollers. Recently, there has been a DIY resurgence described as the Maker Movement. Schools spent more time on SPICE (Simulation Program with Integrated Circuit Emphasis) simulations than real world labs. Thanks to multi-layer PCBs, surface-mount packages, and a lot of software, it became impossible to troubleshoot anything but the most basic faults in consumer electronics products.
![tube power amplifier tube power amplifier](https://i.ytimg.com/vi/mE7SoZXX1FQ/maxresdefault.jpg)
Useful surplus electronics parts were harder to find. We saw the demise of Popular Electronics (1999) and Radio Electronics (2003). However, it seemed that the DIY community suffered. Technology quickly advanced, and we benefited from some incredible capabilities. But, you could still build a computer from scratch. Early computer technology was more complex for the DIY community. If you did not have a schematic for something, you could usually trace one out with a pencil and paper. Photo 1: The Arduino audio controller is inexpensive and easy to assemble.Ĭonstruction was point-to-point or single-sided PCBs.