Organize and Share your Electronics the way you want. Sign-Up for a free account now. It takes only 30 seconds!

LDMOS amplifiers

LDMOS amplifiers

Pete (N6QW) writes:

This project encompasses proving an Arduino Control of a hi Power Linear Amplifier. It is a new departure for N6QW as it has extensive I/O requirements which required moving to the Mega 2560 a Arduino variant that has 56 Digital I/O and 16 Analog Inputs. The on board memory is 256K
The current configuration uses a 3×4 Keypad as the main control element.
Key 1 = Power On
Key 2 = Power Off
Key 3 = Amp Bypass [In this mode the LPF’s are disconnected and the amp power is off it requires RESTART and LPF Selection the TR Relay is disconnected so No RF into the amp on Bypass.LED16 Controls whether the amp is bypassed BUT LED 17 and LED 18 control the actual sequencing of the connection of the amp to the antenna system and the transceiver. WE are trying to avoid “hot switching”. Thus the amp is connected to the antenna first and then the transceiver is connected to the amp. This is done by a small delay on the connection of the amp to the input side. Problem solved!]

More info at N6QW Homebrew Radio blog.

 

More Articles to Read

Replace a microwave’s beeping with the Windows XP startup sound
Replace a microwave’s beeping with the Windows XP startup sound
A DIY Laser Scanning Microscope
A DIY Laser Scanning Microscope
Teleknitting: TV-based string art
Teleknitting: TV-based string art
Start your day with Nerf target practice!
Start your day with Nerf target practice!
Converting a coffee maker into a 3D printer
Converting a coffee maker into a 3D printer
Sort your M&Ms or Skittles with this ingenious machine
Sort your M&Ms or Skittles with this ingenious machine
The Hunt is both a playful game and tasteful home decor
The Hunt is both a playful game and tasteful home decor
The Rick and Morty Alarm will make sure you’re always on time
The Rick and Morty Alarm will make sure you’re always on time
Build your own MIDI accordion with Arduino
Build your own MIDI accordion with Arduino
A tiny orchestra of Lego Robots driven by Arduino
A tiny orchestra of Lego Robots driven by Arduino
8-bit Frogger game on a digital microfluidics device
8-bit Frogger game on a digital microfluidics device
An experimental game with a conductive rubber band controller
An experimental game with a conductive rubber band controller

Top




Shares