Johnson's Techworld

Grid-tie inverter is one which can be tied up with electrical power grid. It converts direct current to alternating current in a form suitable for injection into the

After setting up my DIY off grid solar power supply for my amateur radio shack, I had installed this two way switch to change over from battery to

This question is from a viewer on my YouTube channel. But when I approved the comment for giving a reply, it disappeared! So I thought of posting it

One of my ham friends told me that he is using an HF linear amplifier with SD2933. It is an RF power N-channel MOSFET. An interesting fact in

I have been experimenting with various changes to finally achieve fully off grid power supply for my amateur radio shack. Started off by purchasing 180W monocrystalline PERC solar

As a continuation of my off grid solar efforts to power my ham radio shack, I have bought a rechargeable fan as well, from https://amzn.to/4hIhMUX! Please note that

Today morning VU2HSM announced the Vadakara Ham Meet 2026 during Charminar Net on 7080 kHz. Last time it was conducted in 2023 and plenty of amateur radio operators

I asked Google AI whether there is any advantage for analog multimeter over digital. Analog multimeters are supposed to be better for visualizing rapid changes and providing real-time

Well, I had not heard about them, though I recently posted on the possibility. Then one of my online friends told me that there is plenty of material

I had bought a 180W Monocrystalline PERC solar panel to build an off grid power supply for my ham radio shack. It was not giving good results as