Ohm’s Law (U=I*R) relates voltage, current, and resistance to analyze circuits, while the Power Law (P=U*I) calculates electrical power consumption or dissipation in components.

NE555 in Astable mode: Generates a continuous square wave output with adjustable frequency and duty cycle. Calculate the frequency that different values of resistors and capacitor gives.

NE555 in Monostable mode: Produces a single output pulse of fixed duration when triggered. Calculate the timings.

Calculate resistors or the amplication of an Inverting opamp.

Calculate resistors or the amplication of an non Inverting opamp.

Find the value of Surface mount resistors by entering their 3 digit code.

Calculate the current limitting resistor for a led in circuit.

Find the value of capacitors by entering the 3 digit code found in schematics or on PCBs.