Sine wave generator circuit

Other Hardware General Electronics
1

Dear All,

I want show to school student about Rectification and AC to DC covert / DC Smooth circuit using Capacitor

For this I need to use a transformer which is high voltage

Therefore I have decided to make a Sine wave generator using simple circuit , Then I can ignore the Transformer

Please advice the tested Sine wave generator that I can Use for rectification
It also better if we can change the frequency fro 0 to 60

Thanks in advanced

2

Hello,
Please can you read the forum guidelines at the top of each forum section and follow the advice there.

I'm lost as to what this has to do with a display.

The are zillions of circuits on the internet for oscillators of all kinds, are you unable to use Google or other search engine?

3

Yes I know that google has lot of tutorial but not tested and confirm

I Have found HGSEMI ICL8038N
This is 8 pin and it have more channels but I need single channel

I am sorry it has mistakenly put to the display forum , Perry Thanks for your advice

Dear Administrator please change this to Power Electronics forum

Thanks in advanced

4

'If this is for demonstration purposes'.

Use an OP amp sine wave generator circuit.

Feed the output to a full/half wave bridge, add a capacitor.

Note: you do not need to use 60Hz, you can use 100, 1000 etc.

download.png

But why not just use something like 12VAC from a transformer ?

download.png

5

Here you can find a circuit for a function generator.

I'd recommend you fit the otput IC in a socket so it can easily be replaced.
instead of the "standard" LF351 you could use a power op amp such as AD8531
which has the same pin-out

6

You can buy complete working function generator boards on Ecommerce sites like AliExpress for about USD$1.50 each.

7

One thing to consider is that you cannot share ground between the sine wave oscillator circuit and the
rectifier, so at least one needs to be floating (probably the rectifier is easiest).

Also if you don't use a transformer you can't easily demonstrate a centre-tapped secondary
driving a full-wave rectifier.

8

Dear All, Thanks for the inputs

I would think to send the sign wave by the Android App ( Function Signal Generator app) , Signal can be sent by the 3.5 jack . So signal coming from eye phone jack to be amplified

Please advice if we can feed the signal coming from phone app to the half wave and full wave rectification demonstration

In this case we can control frequency very precisely . Demonstration can be done easily

Thanks in advanced

9

eye phone jack

just FYI,
it's "iPhone jack" (NOT 'eye phone jack')

10

One thing to consider is that you cannot share ground between the sine wave oscillator circuit and the
rectifier, so at least one needs to be floating (probably the rectifier is easiest).

This circuit appears to have a common ground.
Why do they need to be isolated ?
Are you referring to a standard 1:1 isolation transformer ?

11

aarg:
You can buy complete working function generator boards on Ecommerce sites like AliExpress for about USD$1.50 each.

Yeah AliExpress is one of the Best websites so far.