I love examples like this one that show clearly that simulators are a waste of time.I think the present problem is more of the trivial kind. It's that the CD4047 simply isn't oscillating in this Proteus simulation.
Does that include post #5 ?Hi,
I agree with the posts, especially #6, #8, #9.
Klaus
It is obvious that the simulation software knows nothing about the oscillator in the CD4047 IC.
The circuit produces a squarewave that is 240V peak-to peak which produces exactly the same power to a heater or incandescent light bulb as a sinewave that is 240V RMS. Many electronic products that rely on the higher peak voltage of the sinewave and electronic motor speed controls probably will not work from the squarewave.
Does that include post #5 ?
... as transformer is merely an Inductor with no load, and V is full of harmonics not kind to iron core losses.
So output is anything but a squarewave, but rather the integral of the primary current \N turns ratio. * RL....i.e. triangle voltage
Hi,
With simple low frequency, low current circuits a simulation gives good results.
But it is very important to understand the critical points of a circuit and to know how to route a good pcb layout.
I once saw a simple step down DC/DC circuit. The designer told me it doesn't work like expected and i should try to find out why.
It was pretty obvious to me: No ground plane and the whole switched current path was routed "around" the pcb with a trace length of about 400mm. ...
Klaus
Although I have never seen a squarewave inverter, here is a similar one and the 'scope shows a squarewave output:Prove it.
... as transformer is merely an Inductor with no load, and V is full of harmonics not kind to iron core losses.
So output is anything but a squarewave, but rather the integral of the primary current \N turns ratio. * RL....i.e. triangle voltage at max loads and high voltage square wave with tiny load that increases with R Thus bulbs with 10% to 1 R will start soft and regulate voltage.
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?