A Zener Diode is a diode that allows voltage to flow from anode to cathode under normal circumstances, but also allows voltage to reverse direction (called the Zener effect) when it reaches its Zener Voltage. They are commonly used in voltage reference circuits.

The voltage drop remains relatively constant under varying current.

Last edited by ctp. Register to edit

Tags: none

The Schottky diode also known as hot carrier diode, is a semiconductor diode with a low forward voltage drop and a very fast switching action. The cat's-whisker detectors used in the early days of wireless and metal rectifiers used in early power applications can be considered primitive Schottky diodes.

When forward current flows through a solid-state diode, there is a small voltage drop across its terminals. A silicon diode has a typical voltage drop of 0.6–0.7 V, while a Schottky diode has a voltage drop of 0.15–0.45 V. This lower voltage drop can be used to give higher switching speeds and better system efficiency.

The Schottky diode is often used as a voltage limiter (aka clamp or bypass diode), in reverse bias.

See Schottky_diode on Wikipedia.

When something is Schott (shot), it typically will drop

Hint: The wrong answers all go in the same direction: Higher, More and Longer.

The correct answer goes opposite with 'Less'.

Last edited by kd7bbc. Register to edit

Tags: none

This question does not yet have an explanation! Register to add one

Tags: none

In electronics, the following:

• a varicap diode
• varactor diode
• variable capacitance diode
• variable reactance diode
• tuning diode

are types of diode whose capacitance varies as a function of the voltage applied across its terminals.

http://en.wikipedia.org/wiki/Varicap

Hint: "V" in voltage, "V" in varactor diode.

Also think variable capacitor diode.

Logical hint: The word varactor is made of two main parts: "v" and "actor." I think of it as being voltage reactor. Reactor means that it reacts to changes, in this case changes in voltage.

Last edited by ironcal67. Register to edit

Tags: none

The I in PIN means intrinsic!

Wikipedia: A PIN diode is a diode with a wide, undoped intrinsic semiconductor region between a p-type semiconductor and an n-type semiconductor region. The p-type and n-type regions are typically heavily doped because they are used for ohmic contacts.

The wide intrinsic region is in contrast to an ordinary PN diode. The wide intrinsic region makes the PIN diode an inferior rectifier (one typical function of a diode), but it makes the PIN diode suitable for attenuators, fast switches, photodetectors, and high voltage power electronics applications because it has low junction capacitance.

Test Hint: PIN - 3 letters. Answer - 3 words

Last edited by kd7bbc. Register to edit

Tags: none

This question does not yet have an explanation! Register to add one

Tags: none

Some of the power that flows through a junction diode is dissipated in the form of heat. If a diode becomes too hot it will be damaged or destroyed.

When a component is damaged, we may say "it let the smoke out." Think "smoke," think "fire." Think "fire," think "hot."

silly hint: Both the question and the correct answer contain the word junction

Last edited by nv2k. Register to edit

Tags: none

A hot-carrier diode (Schottky diode) is used as a VHF/UHF mixer or detector. In construction, a metal–semiconductor junction is formed between a metal and a semiconductor, creating a Schottky barrier (instead of a semiconductor–semiconductor junction as in conventional diodes).

https://en.wikipedia.org/wiki/Schottky_diode

Hint: "Semiconductor" is in the answer. Think a barrier made out of metal!!

Last edited by sando. Register to edit

Tags: none

Point contact diodes are derived from crystal detectors and are good high frequency detectors. The key word is "detector"

Complete explanation here: https://electronicscoach.com/point-contact-diode.html

Hint: to make "Contact" between two "Points" you'll need a "Detector"

Hint: "Diode" and "Detector" both start with D.

Last edited by debshinder432. Register to edit

Tags: none

A PIN diode is a semiconductor device that operates as a variable resistor at RF and microwave frequencies. One common use for PIN diodes is as an RF switch. (E6B12)The characteristic of a PIN diode that makes it useful as an RF switch or attenuator is a large region of intrinsic material. (E6B05) The forward DC bias current is used to control the attenuation of RF signals by a PIN diode. (E6B11)

Remember that you can have both an AC and a DC component of current flow in a circuit. In this case, a DC component is used to control the AC component.

Hint: Think of "control the current" (only answer that has "current" in it.

Last edited by ki5hav. Register to edit

Tags: none