ePanorama.net

All about electronics and circuit design

Bad AI circuits

Still, Ai is not capable enough to create correct diagrams on its own. I wonder if it is posible to post working circuits to Facebook…… mostly only AI crap seems to be posted Example from https://www.facebook.com/share/p/16vJCdn37B/ The left side circuit is almost correct, but for example the control button has only one wire in it,

Transformerless LED supply idea

I saw the following circuit design posted to Facebook. Source: https://www.facebook.com/share/p/1HuYVvXHcf/ What is wrong with this design: No isolation from mains, potentially electrocutes if you touch any part of exposed LED strip. The circuit will only give around 220V/30000ohms=0.00766.. mA current that can light one normal LED but not any long LED strip like shown

Bad amplifier design

I saw this at Facebook at https://www.facebook.com/share/p/1YitRKKmxy/ Can burn loudspeaker and transformer due DC flowing Dc quite probably saturates transformer core-> lots of distortion and very little sound Even if works the transformer is expensive and limits sound quality Very low impedance sound input is less than 30 ohms – which means this circuit does

Touch switch

I saw this circuit at https://www.facebook.com/share/p/16HFEwzkcQ/ The diodes try to charge and discharge the mosfet gate based on static electricity of user touching. Depending on the amount of charge you happen have it might not work at all, might work or could fry the mosfet (they are static sensitive components). FETs are extremely vulnerable to

Huge electrical outage in Spain and Portugal

We rarely think about how essential and reliable electricity grids are until they fail. Today Spain, Portugal and parts of France hit by massive power outage. A nationwide power outage hit Spain and Portugal on Monday, leaving millions without electricity. In Portugal, official sources told domestic media that the outage, which hit around late morning