This article describes a remote ON/OFF switch which uses an RC receiver and adapter chip to convert the RC PWM signal into an ON/OFF output. (Suitable RC transmitters are on hand.) The immediate application is for remote ON/OFF PTT or KEY of a transmitter for field strength testing at various locations. Background Remote control hobbies … Continue reading RC PWM – ON/OFF switch
This article has been copied as reference for a new article from my VK1OD.net web site which is no longer online. The article may contain links to articles on that site and which are no longer available. I have been asked by a correspondent to comment in the context of my model of a Guanella … Continue reading Differential flux leakage in a Guanella 1:1 balun
The Hobbyking A30 is an economical power supply for LiPo chargers. problems were noticed with a Turnigy Accel 8150 charger where the display became corrupted when the case was touched. It turned out the output terminals of the A30 are isolated from chassis and power supply ground. Above is a scope capture of the voltage … Continue reading Hobbyking A30 issues