Otter LRC CM4647296 comes home

[Bob Carriere]

Has the resident electric wiz .....can you explain how a Zener diode works to reduce the voltage??? all the voltage drop devices I have used were rather a "resistor" that reduced the voltage and usually air exposed to dispel heat.....

Jordan...... what is the identifier for the Zener....as in part # or its capacity to reduce by exactly 50%??

Never too late to learn.....

Bob C

[Lynn Eades]

Bob, from the web.

ADVANTAGES OF ZENER DIODES FOR CIRCUIT FUNCTIONALITY
A zener diode is a type of rectifying semiconductor diode that is used to regulate voltage in a circuit, working in a reverse-bias mode to avoid failure. Semiconductor diodes allow a current to flow in only one direction, but zener diodes allow the current to also flow in the opposite direction when exposed to enough voltage. Zener diodes provide excellent solutions to several common circuit needs.

Below, Solid State Inc. reviews the applications, operations and advantages of zener diodes.

WHAT IS THE DIFFERENCE BETWEEN A DIODE AND A ZENER DIODE?
As noted, a diode is a semiconductor that conducts in a single direction only, whereas a zener diode conducts in both forward and reverse biased directions. If a normal diode operated in reverse, it would be destroyed, though no damage occurs with a zener diode. Instead, zener diodes take full advantage of the amount of reverse voltage applied.

ZENER DIODE: BASIC OPERATIONS AND APPLICATIONS
Zener diodes operate the same as a PN junction diode when in the forward-bias direction, but it’s typically used for the reverse mode in its applications. That said, zener diodes also regulate voltage one way (regular) or both ways (bidirectional). It has a wide variety of voltages and, as reverse voltage increases to its breakdown voltage, a current will start to flow through the diode. Because the voltage remains fairly constant across a wide range of power supplies, these are used for voltage regulation, surge suppressors, clipper circuits, and as reference elements across a variety of applications.

If you are handling diodes to build or use within a circuit, it’s essential to determine which way to point the diode. The two terminals of a diode are referred to as the anode to case (AK) and cathode to case (KK). An anode is an electrode that a positive charge will flow through into the device from an external circuit; a cathode is an electrode that directs the current to flow out of the device.

ADVANTAGES OF ZENER DIODES
There are a number of benefits of using zener diodes in circuit applications, including the following:

Less expensive than other diodes
Ability to shift voltage
Easily compatible and obtainable across systems
High-performance standard
Protection from over-voltage
Ability to regulate and stabilize circuit voltage
Greater control overflowing current
Usable in smaller circuits
In review, zener diodes are designed to operate in reverse biased mode at which they begin to conduct substantial current. It may function as a voltage regulator by drawing less current if the voltage is too low, or alternately drawing more if the voltage is too high.ADVANTAGES OF ZENER DIODES FOR CIRCUIT FUNCTIONALITY
A zener diode is a type of rectifying semiconductor diode that is used to regulate voltage in a circuit, working in a reverse-bias mode to avoid failure. Semiconductor diodes allow a current to flow in only one direction, but zener diodes allow the current to also flow in the opposite direction when exposed to enough voltage. Zener diodes provide excellent solutions to several common circuit needs.

Below, Solid State Inc. reviews the applications, operations and advantages of zener diodes.

WHAT IS THE DIFFERENCE BETWEEN A DIODE AND A ZENER DIODE?
As noted, a diode is a semiconductor that conducts in a single direction only, whereas a zener diode conducts in both forward and reverse biased directions. If a normal diode operated in reverse, it would be destroyed, though no damage occurs with a zener diode. Instead, zener diodes take full advantage of the amount of reverse voltage applied.

ZENER DIODE: BASIC OPERATIONS AND APPLICATIONS
Zener diodes operate the same as a PN junction diode when in the forward-bias direction, but it’s typically used for the reverse mode in its applications. That said, zener diodes also regulate voltage one way (regular) or both ways (bidirectional). It has a wide variety of voltages and, as reverse voltage increases to its breakdown voltage, a current will start to flow through the diode. Because the voltage remains fairly constant across a wide range of power supplies, these are used for voltage regulation, surge suppressors, clipper circuits, and as reference elements across a variety of applications.

If you are handling diodes to build or use within a circuit, it’s essential to determine which way to point the diode. The two terminals of a diode are referred to as the anode to case (AK) and cathode to case (KK). An anode is an electrode that a positive charge will flow through into the device from an external circuit; a cathode is an electrode that directs the current to flow out of the device.

ADVANTAGES OF ZENER DIODES
There are a number of benefits of using zener diodes in circuit applications, including the following:

Less expensive than other diodes
Ability to shift voltage
Easily compatible and obtainable across systems
High-performance standard
Protection from over-voltage
Ability to regulate and stabilize circuit voltage
Greater control overflowing current
Usable in smaller circuits
In review, zener diodes are designed to operate in reverse biased mode at which they begin to conduct substantial current. It may function as a voltage regulator by drawing less current if the voltage is too low, or alternately drawing more if the voltage is too high.

[Jordan Baker]

I’ve referred to the below website previously.

http://devestechnet.com/Home/Native12VUpgrade

The part on the Zener diode is near the bottom of the above link. I’ve included the relevant section as an image.

It’s full of very well thought out modifications to inline 6 engines. However a lot of what they write about can be applied to any make of our vintage vehicles.

[Jordan Baker]

As a follow up, I emailed the guy who created the above website asking if a heat sink was required. His reply is as follows.

As for my setup, I thought about adding heat shrink, however the diode is mounted to the fibre board then kept inside that housing.

[Bob Carriere]

.....and get rid of the old resistor color chart.....

Zener diode CZ5342B CT-ND 6.8 volts.......will try that........

Thanks

Bob C

[Alex van de Wetering]

Nice work as usual, Jordan. I like how you did the small pressing....small modelling jobs on a big vehicle.

[Jordan Baker]

Bob, I bought 10 online with shipping for about $20 Cnd. One was bad or I fried it on my variable DC power supply. The rest were fine. Compared to the other options, I find these are a great deal with very little to go wrong. The Runtz ones have more components and require a dedicated ground. Basically more things to go bad.

Alex, the time spent on making the stamping die was substantially longer than pressing the one successful piece. By that point it was simply more of the challenge to see if I could stamp out a part like this.