Is a inverter the same as a transformer or marx generator?

AI Thread Summary
Inverters, Marx generators, and transformers serve different purposes in electrical systems. Inverters convert DC from solar panels into AC for household use, utilizing capacitors and inductors for efficiency, while Marx generators produce high voltages from AC sources but are not efficient for high power applications. The inverter employs a switching mechanism around a transformer to create a sinusoidal wave, which is essential for handling high currents. Although both devices use capacitors, their roles and operational contexts differ significantly. Understanding these distinctions is crucial for anyone working with solar energy systems.
bmxrider2012
Messages
3
Reaction score
0
so i was looking up solar inverters (for solar panel setup) and i saw this picture
and i thought it looked kinda the same how the marx generator is setup with a bunch of capacitors
and on the schematic it looks like a transformer ... are these three similar in anyway? or do they use some of the same technology?
 
Last edited by a moderator:
Engineering news on Phys.org
Solar panels generate DC. Households are typically set up to run with AC. It is the job of the inverter to change the DC into the specified AC required. As your photo illustrates, an inverter is a lot more than merely a passive transformer, though it almost certainly will include a transformer and some inductors to help it accomplish the task efficiently and safely.

As for the marx generator, that sounds very ... political.
 
NascentOxygen said:
As for the marx generator, that sounds very ... political.

lol why do you say it sounds political?

heres a picture of one

you can see its just a bunch of caps all next to each other that's why i was wondering if all the caps in the inverter are doing the same thing as the marx generator
marx-generator-radu-motisan-1.jpg
 
In the voltage multiplier circuit shown, the capacitors form the heart of the step-up process, it's a low current load and no one is demanding a particular waveshape. In a DC-AC inverter, a switching arrangement around a transformer is needed, to produce a waveshape approximately sinusoidal at. the high currents involved.
 
bmxrider2012 said:
lol why do you say it sounds political?

heres a picture of one

you can see its just a bunch of caps all next to each other that's why i was wondering if all the caps in the inverter are doing the same thing as the marx generator

A Marx generator (also a Cockroft Walton voltage multiplier) is a way to produce very high volts from an (already high voltage) AC source but it is not for high power and is not efficient. An inverter will produce high voltages from a DC source and can be highly efficient. An inverter uses an oscillator to drive a step up transformer. Much more suitable for any purpose other than just "making sparks" these days, I think. Though, in the early days, it was sometimes the only way to obtain high energy particle beams.

BTW, the 'political' bit was the reference to Karl Marx, I think. (Nascent Oxygen just can't help himself sometimes :wink:.)
 
Last edited:
You mention the schematic - it would be easier / better to ask about the elements in the schematic - the capacitors for example probably sit on both the Solar ( DC ) Side and the Grid/Load ( AC) side of the inverter circuit for both filtering and proper clean sine wave inverter operation. There probbable is not a tranformer in the actual power circuit, but they may be there for control power and sensing - etc.
 
Hey guys. I have a question related to electricity and alternating current. Say an alien fictional society developed electricity, and settled on a standard like 73V AC current at 46 Hz. How would appliances be designed, and what impact would the lower frequency and voltage have on transformers, wiring, TVs, computers, LEDs, motors, and heating, assuming the laws of physics and technology are the same as on Earth?
While I was rolling out a shielded cable, a though came to my mind - what happens to the current flow in the cable if there came a short between the wire and the shield in both ends of the cable? For simplicity, lets assume a 1-wire copper wire wrapped in an aluminum shield. The wire and the shield has the same cross section area. There are insulating material between them, and in both ends there is a short between them. My first thought, the total resistance of the cable would be reduced...
I used to be an HVAC technician. One time I had a service call in which there was no power to the thermostat. The thermostat did not have power because the fuse in the air handler was blown. The fuse in the air handler was blown because there was a low voltage short. The rubber coating on one of the thermostat wires was chewed off by a rodent. The exposed metal in the thermostat wire was touching the metal cabinet of the air handler. This was a low voltage short. This low voltage...
Back
Top