EveryCircuit - Frequency Subtracters

8 years ago

Its already an frequency adder as it is from math also a substractor! But unfortunately the propagation delay of Everycircuit does filter / low passes it out.

jason9

8 years ago

Is there any way to create a voltage multiplier without using logic gates?

fibean

8 years ago

If you want a frequency multiplier, look at Class C amplifiers. They use a resonant LC circuit (also called LC tank) that resonates at the desired frequency. You can then feed the amplifier with a lower frequency. The output will resonate as long as it's tuned to N times the input frequency, where N is a positive integer.

hurz

8 years ago

Jason, this xor here is not used as logic gate. Its used as multiplier!!!!! I know this is strange, but as long everycircuit does not provide a multiplier as symbol, we have to hack the xor.

hurz

8 years ago

Sure, there are more trick circuits to do a multiplication, however, this is the smallest simplest in everycircuit I can imagin.

jason9

8 years ago

Yes, I know it's not being used as a logic gate, but I said logic gate because it is one, and logic gates are slow, so I don't want to use them. I would like you to make one without using logic gates no matter how complex it is, but I would prefer it if you could use OP-amps, and no silicon parts, because OP-amps are perfect, and silicon parts are not, and I want as close to a perfect multiplier as possible, but if you can't make a perfect one or need to use silicon parts, just please make it as close as possible to perfect.

hurz

8 years ago

Xor gates in everycircuit are as close as possible to perfect!

jason9

8 years ago

Yes, but they're slow, and OP-amps aren't. I just want a fast multiplier, even if it has to use slightly imperfect components (like transistors), although I'd rather it only used perfect components (like OP-amps). Also, it needs to be able to multiply anything regardless of what polarity the inputs might be (because found a multiplier using OP-amps, but it could only multiply if both inputs were of the same polarity, which isn't acceptable for me).

hurz

8 years ago

I can do that, but why shall I. Working with you seems to be oneway track. I already spend quite some time. I think you should do such a multiplier by yourself.

jason9

8 years ago

Unfortunately, there's no way I can design a multiplier like that. You designed a square/square root circuit, but there was no way I could've figured out how to make one, but you did! So, could you please make that multiplier for me? I don't think there is any way I could design it myself. Also, I'd prefer if it didn't include Gilbert cells, because I already found a few that were based on the Gilbert cell, and they were far from perfect, although they did do well with low values.

hurz

8 years ago

No sorry not now, I have to many other importante projects to keep track, and I do not see any value for me and the community to have one. Maybe Igor is following or you can make a request, right most button at componente list in schematic entry mode. Keep it up!