Typically, a power diode, such as a 1N4001 with a capacitance of 1 nF, gives suitable results. The discharge time is approximately 0.3 to 1 sec at room temperature, falling into the millisecond range ...

Zener diodes can be downright baffling for beginners, especially when mistakenly thrown in a circuit in place of a regular 1N4001. [Afrotechmods] put together a great video explaining their ...