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They have not taken over the market.You wonder why the Chinese and Taiwanese have taken over the electronics market.
I think he wants stereo, on the hope that it will be more annoying to the deer.Pin 7 of a 555 is the collector of an NPN transistor. When the transistor is turned on when pin 6 is high enough then it usually discharges the timing capacitor through a series resistor. Pin 7 needs a resistor to the positive supply to "source" current to charge the timing capacitor.
You don't need two amplifiers driving two speakers. A single amplifier and speaker can play an entire orchestra so only two sounds are very easy for it to play.
I can make your circuit sorta work, but the NPN switch is much more effective. If you think it is good, post a complete schematic with all the parts necessary to make it work.It works I didn't draw the whole thing out you have most of it worked out from what I have read. And Colins if your so good post some thing you did not some thing you saved from the net I at least. Draw my own circuit. Not some one else I thought there where real people on here. Maybe your radio or TV has a tuning capacitor you no the the variable kind. Mine has no moving part HOW DID THEY DO THAT. like i showed you. it's in it's simple form.
Well, s..t!! That's the same thing that MrDEB is doing. You sent a bunch of us down the garden path with your PNPs connected to the discharge pin.I was really thinking more like this. Now i didn't work out any values but it should work seeing you can bring one of the capacitors in to play at a time which should change the output.
We are real people and see that your schematics do not work.It works I didn't draw the whole thing out you have most of it worked out from what I have read. And Colins if your so good post some thing you did not some thing you saved from the net I at least. Draw my own circuit. Not some one else I thought there where real people on here. Maybe your radio or TV has a tuning capacitor you no the the variable kind. Mine has no moving part HOW DID THEY DO THAT. like i showed you. it's in it's simple form.
I think your greatMine has no moving part HOW DID THEY DO THAT