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Hello Everyone! This Circuit is a Squared Triangle Waveform generator with an optional integrator. What happens, is the 555 Timer IC generates a waveform in a shape of a thin, crooked square (See below for details how it forms). Then that Current and Voltage can either go straight to the output, or, you can have it turn into a Perfect Triangle wave by using an Op Amp as an Integrates (See below for what that is). You can choose because there is a switch connecting the Thin Crooked Square Wave (I am Going to call it a Squared Triangle Wave). Once you push the button, the current can pass through the wire connecting the 2, so it can get Integrated. In the Button is up, the “wire” is incomplete, so current cannot pass through which means that the output will just be the 555 Timer’s
On the 555 Timer, it generates the Squared Triangle by taking a Square Wave and putting it through RC Circuits. The square wave forms because there are 3x 10nF capacitor constantly charging and discharging. When the Capacitors are charging, the voltage drops and when the capacitor discharges, the voltage spikes, which created the effect of a Square. Then, that gets given off to 2 Circuits consisting of a Resistor and Capacitor. These 2 loops result in the Squared Triangle to be formed. Moreover, the Resistors value changes the waves properties and shapes. See what happens when you change the resistance of the 47 k Resistor!
An Integrator is a type of Op-Amp Circuit. Depending on the input Wave, It spits out another wave. This is because the output voltage is equal to -1/RCf x Integral of Vin dt; where R is the Resistor at the Inverting Input and Cf is the Capacitor, and Vin=9v. This is because of the name Integrator because the Vout is involving the Integral of Vin. So, when a Square wave enters the Inverting Input, it turns into a Triangle. Since the Frequencies and Shapes of the Squared triangle match a Square wave, the Integrator interprets the Squared triangle as a Square wave and the out put is a Triangle wave.
A Square wave is when the voltage Oscillates from 0v to Whatever Voltage With time periods between. For example, with a 10v Square wave, It could go to 0v - 10ms - 10v - 10ms - 0v.....You get it 😀. A Triangle wave is sort of like a Square wave, but the Voltage slope Angles Upward and then Downward over and over again. This forms the shape of a Triangle.
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*Feel Free to play around with this Circuit....it does not affect the Published one. Try changing different values of components, adding components, or even use Amperage and Voltmeters to get more Detail!*
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