DCAudioDIY.com

My driveway lights have the kind of circuit you are describing. Not dimmable, but regulated.

_________________
I have too much stuff - https://www.pleasebuymystuff.com

_________________
Walt

The thread was started about a problem with LED home lighting...

Roscoe

_________________
I can explain it to you, but I can’t understand it for you.

The LED is on the DC side, I'm sure it has decoupling capacitors in place already. The problem is the noise coming out of the AC side.

_________________
I have too much stuff - https://www.pleasebuymystuff.com

_________________
Walt

The power supply in LED lamps may be having trouble filtering the AC side noise and passing it through to the LED or else the CC control circuit may be having trouble with the line noise. I have a number of LED bulbs in my house from Feit and other manufacturers that are very low cost and also lots of switch mode power supplies. I have not had any flickering with them. The only time I have had any flickering is when I'm operating the whole house on my backup generator and that is probably the regulator in the generator hunting when the load is low. Under high loads it goes away.

With all the electronic devices that are being used today in the typical home with almost all of them having input filters, line noise in general is greately reduced. I know that in the last 10 years I have had great difficulty using devices using PLC (power line communications) protocol because all the line filters in the various electronic devices filter out the HF communication signals superimposed on the AC line.

I have many switching PS in my home (two laptops, router, 3 wireless phones, TV, cable box etc etc) but was surprised that this lightbulb is so susceptible to switching noise? If all GE LED Reveal bulbs (a premium bulb) are going to flicker with a nearby Apple PS that GE needs to work harder at isolating their DC supply from home born noise.


On the plus side, I can now walk around my home and plug this lamp in to see if noise on the outlet is an issue, a cheap noise sniffer.

But it certainly reminds us of how much noise is present in our homes and wires, not something we want in our audio systems.

_________________
Walt

Another way is a true sinewave inverter and rechargeable batteries to take the system off the grid.

Just depends on the power requirements. I built one with a 2KVA True Sinewave inverter and 4-100Ah AGM batteries. About the same line distortion as my AC line in the house at 2% THD. Needed that for the single ended solid state setup years ago.

AC Power regeneration works as well.

My wife loves light dimmers. Ugh!

My guess is that the cc LED lamp circuit is overly sensitive to the noise introduced onto the line. Since I build switchers, I have seen all kinds of weird stuff happen. Just ask Tom about my 2.5-amp fuse blow outs with having less than 0.6 amps load current.

Good filters are expensive and require physically larger parts than companies like Apple want to put in, and it may be consumer acceptance as much as cost.

David