| Electronics > Beginners |
| Circuit to lower Sine wave frequency |
| << < (3/4) > >> |
| Audioguru again:
Many people use a switched capacitor multiple order lowpass filter IC to convert a squarewave to a pretty good sinewave. |
| Kleinstein:
One could first set up the frequency (e.g. a via PLL or nonlinear multiplier) and than use that clock to generate a sine from a look up table or the like. Chances are the amplitude information would get lost. Another option would be a mixer (or 2) to shift the frequency by a constant amount. |
| rstofer:
We still don't have an answer to milliwatts of megawatts. |
| Le_Bassiste:
--- Quote from: Alfgan on October 31, 2019, 08:14:18 pm ---Hello everyone! I have a question. Is there a circuit or component or chip that lowers sine wave frequency? For example I wave a supply of 100Hz 20V sine wave and I need 40Hz 20V sine wave... what circuit or component would make it possible? Thanks Have a good day! --- End quote --- these circuits are commercially available as "variable frequency drives" for basically all powers from kW to MW. if you just need a couple of watts, you could use your hifi amplifier. the basic principle is always the same 1. take what you have and rectify / filter it to DC 2. take the DC and power a halfbridge/fullbridge with it 3. control the output of the bridge by applying a control signal of your choice (waveform, frequency, amplitude). OTOH, if you want to consistently change input frequencies (that is, 100 Hz to 40 Hz, 500 Hz to 300 Hz and so on) you could feed the (heavily attenuated) input signal into a device that is called a "harmonizer", something like the old "Ibanez HD1000", or the famous Eventide harmonizers. and then feed it into an amplifier to boost it back to the desired level. |
| IconicPCB:
Google Cycloconverter |
| Navigation |
| Message Index |
| Next page |
| Previous page |