Since the beginning, this project had a core goal of making safe electric knives. That sentence might sound ridiculous, but we believe it will be possible to make tools, not toys, that will deliver a shock that will not harm the skin, and without any sharp edges, they won't cause accidental harm by design flaws, like jagged zip ties. One way to keep folks from getting hurt is to use parts from commercial stun guns which are designed so that no one is so badly hurt that they sue.
Enough background
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A flashlight stun gun arrived, was tested for a charge, then disassembled.
In the bottom cap, was a power switch and charging port, which can appears on the right side of the picture. From the charging port were two white wires, an LED, and a resistor. The LED and resistor were there to show when it was plugged in. The white wires went to a capacitor and chip which was likely a full wave rectifier for charging the batteries inside. On the left side of the picture, red potting material filled a plastic cylinder which was a high voltage generator.
The top of the stun gun held a flashlight circuit and light which are of no consequence for this teardown. On the left side of the picture, the battery pack was exposed. It had four cells which each supplied 1.2 volts. There was an empty cylinder to give the battery pack its shape.
All the parts were placed on a piece of paper and labeled. The components concerned with the flashlight were kept to the top of the page while the power and stun gun parts were placed at the bottom.
The most perplexing find was the high voltage generator. It had no part number, and it is dangerous to assume it is the same as the one used in the prototype. Since the insides were not exposed, these should be considered different models and not interchangeable.
First time here?
Completed projects from year 1
Completed projects from year 2
Completed projects from year 3
Completed projects from year 4
Completed projects from year 5
Completed projects from year 6
Disclaimer for http://24hourengineer.blogspot.com and 24HourEngineer.com
This disclaimer must be intact and whole. This disclaimer must be included if a project is distributed.
All information in this blog, or linked by this blog, is not to be taken as advice or solicitation. Anyone attempting to replicate, in whole or in part, is responsible for the outcome and procedure. Any loss of functionality, money, property, or similar, is the responsibility of those involved in the replication.
All digital communication regarding the email address 24hourengineer@gmail.com becomes the intellectual property of Brian McEvoy. Any information contained within these messages may be distributed or retained at the discretion of Brian McEvoy. Any email sent to this address, or any email account owned by Brian McEvoy, cannot be used to claim property or assets.
Comments to the blog may be utilized or erased at the discretion of the owner. No one posting may claim property or assets based on their post.
This blog, including pictures and text, is copyright to Brian McEvoy.
2019-05-16
Enough background
----------
A flashlight stun gun arrived, was tested for a charge, then disassembled.
In the bottom cap, was a power switch and charging port, which can appears on the right side of the picture. From the charging port were two white wires, an LED, and a resistor. The LED and resistor were there to show when it was plugged in. The white wires went to a capacitor and chip which was likely a full wave rectifier for charging the batteries inside. On the left side of the picture, red potting material filled a plastic cylinder which was a high voltage generator.
Bottom of a stun gun
The top of the stun gun held a flashlight circuit and light which are of no consequence for this teardown. On the left side of the picture, the battery pack was exposed. It had four cells which each supplied 1.2 volts. There was an empty cylinder to give the battery pack its shape.
Under the cap of a sun gun
All the parts were placed on a piece of paper and labeled. The components concerned with the flashlight were kept to the top of the page while the power and stun gun parts were placed at the bottom.
Parts list
The most perplexing find was the high voltage generator. It had no part number, and it is dangerous to assume it is the same as the one used in the prototype. Since the insides were not exposed, these should be considered different models and not interchangeable.
Comparison of the voltage generator
First time here?
Completed projects from year 1
Completed projects from year 2
Completed projects from year 3
Completed projects from year 4
Completed projects from year 5
Completed projects from year 6
Disclaimer for http://24hourengineer.blogspot.com and 24HourEngineer.com
This disclaimer must be intact and whole. This disclaimer must be included if a project is distributed.
All information in this blog, or linked by this blog, is not to be taken as advice or solicitation. Anyone attempting to replicate, in whole or in part, is responsible for the outcome and procedure. Any loss of functionality, money, property, or similar, is the responsibility of those involved in the replication.
All digital communication regarding the email address 24hourengineer@gmail.com becomes the intellectual property of Brian McEvoy. Any information contained within these messages may be distributed or retained at the discretion of Brian McEvoy. Any email sent to this address, or any email account owned by Brian McEvoy, cannot be used to claim property or assets.
Comments to the blog may be utilized or erased at the discretion of the owner. No one posting may claim property or assets based on their post.
This blog, including pictures and text, is copyright to Brian McEvoy.
2019-05-16
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