Designing a Triangular Signal Generator Circuit
The circuit to generate a triangular signal from a square wave input signal can be designed using an operational amplifier (opamp). Below is a detailed explanation of the circuit along with a diagram:

Circuit Diagram:
The circuit consists of an opamp configured as an integrator. The input square wave signal is connected to the inverting terminal of the opamp through a resistor. A capacitor is connected in feedback loop between the output and the inverting terminal of the opamp. A feedback resistor is also connected in parallel with the capacitor to provide stability to the circuit.

Operation:
- When the square wave input signal is high, the capacitor charges through the resistor causing the output voltage to increase linearly.
- When the input signal goes low, the capacitor discharges through the feedback resistor causing the output voltage to decrease linearly.
- This charging and discharging of the capacitor generates a triangular waveform at the output of the opamp.

Advantages:
- The circuit is simple and cost-effective.
- It can generate a stable triangular waveform from a square wave input signal.

Applications:
- The circuit can be used in waveform generators, function generators, and signal processing applications.

Conclusion:
By designing a circuit using an opamp as an integrator, a triangular signal can be generated from a square wave input signal efficiently. This circuit is a simple yet effective way to generate triangular waveforms for various applications in electronics.