Zener tube parameter Hack 1.0 + Redeem Codes

The function of the current limiting resistor is to limit the current in the circuit, such as the resistor in series with the light emitting diode. The current limiting resistor and the voltage regulator tube are connected in series to play the role of current limiting and voltage division.
Zener tube current limiting circuit calculator is designed to calculate the current limiting resistor and Zener tube parameter values in the circuit under different current parameter conditions, and the results provide accurate reference.