By: Don McClatchie
Video low pass filters are useful to reduce noise for analog video signals and as anti-aliasing for analog to digital equipment designs. When used in analog noise reduction designs the cut-off frequency is set just above the highest useful frequency in the
GUIDE TO MAXIMUM CABLE LENGTHS
These cable distance maximums are industry preferences and longer lengths can be used.
The use of cable signal boosters can greatly extend the usable cable lengths. Also the
cable quality will have a major impact on maximum cable limitations.
FORMAT
ELECTROMAGNETIC RELAY DEFINITIONS
By: Don McClatchie
When designing or repairing electronic circuits that use electromagnetic relays a clear understanding of the important operational parameters of the relay can help you build a better project or help you to determine the reason for a failure. Let’s start with
INTERNATIONAL PROTECTION RATING "IP CODE"
IP CODE
FIRST DIGIT (SOLIDS)
SECOND DIGIT (LIQUIDS)
IP00
NOT PROTECTED FROM SOLIDS
NOT PROTECTED FROM LIQUIDS
IP01
NOT PROTECTED FROM SOLIDS
PROTECTED FROM CONDENSATION
IP02
NOT PROTECTED FROM SOLIDS
PROTECTED FROM WATER SPRAY LESS THAN 15 DEGREES FROM VERTICAL
IP03
NOT PROTECTED FROM SOLIDS
PROTECTED FROM WATER SPRAY LESS THAN 0 DEGREES FROM VERTICAL
IP04
NOT
WHEN LED'S ACT LIKE PHOTOCELLS
By: Don McClatchie
Just about everyone that has played around with electronics knows about the LED (Light Emitting Diode) and everyone can see them in our electronic devices to indicate the condition of things. I remember experimenting
FDNR FILTER DESIGN FORMULAS
By: Frank McClatchie
The following formulas can be used to convert a normalized low pass filter design to a FDNR configuration that converts two normalized series inductance and one shunt normalized capacitance through the FDNR conversion process to resistors that simulate the same
IDENTIFYING CURB MARKING OR GLYPHS
The next time you are out walking on the street, have a look at the sidewalk curbs. You will notice some cryptic markings either painted on the curb or carved into the curb like a Glyph or sometimes markings the on