Forum for Electronics

I want to make the layout of my LNA compact to avoid long metal routing, so I decided to tilt my transistor (vertical placement) because it's wide. Will this affect the operation in any way?

My customer want a custom made SMPS which operates on 230V AC and output 5V/25A. I have to decide the PFC controller. Most of the searches land me up with the choice of CrCM controller. But the customer want's low EMI in compliance with IEC61000 standard. Help me to zero down between CrCM vs CCM

On Aliexpress you can buy little USB LED Night lamps. But they have a pin inside the cap to hold the pcb in place.
Are these lamps also for sale without the pin inside the cap?

I have a circuit with 2 bulbs and a momentary toggle switch. When I press the switch and release , the bulbs will light , after about 30 sec the bulbs goes off per design of the flip flop circuit.
I need instead to set the time very high like about 60 min. What components should I change ?
Thanks

Hello everyone. I needed a 24volt power supply for a 10kw water diesel heater.

Completely failed to research power supply needs for this heater so ended buying a slim 24v ,15A power supply .

With wich the heater wouldn't even move/start.

After a *better* read of manual ,I discovered I need a 24 volt power supply capable of at least 480 watts...
O...