1) 555 Timer v 4.10


This program allows you to calculate Resistor and Capacitor values for both Astable and Monostable modes. Please note that this program was written using Visual Basic 4.0 Therefore it requires the Visual Basic 4.0 Runtimes.


2)Electronicalc Ohm's Law calculator

A simple little Ohm's Law calculator - input two of the known values (power, voltage, current, resistance) and get the last two calculated. Might be handy for quick calculations - has been for me, anyway.


3)Electronics Assistant v 4.1


Electronics Assistant is a Windows program that performs electronics-related calculations. It includes a resistor colour code calculator, resistance, capacitance and power calculations and more. Details of calculations can be saved or printed. It provides all the functions found in the calculators section of this site and more in a stand-alone user friendly program.


4)Filter Design v 4.4

Info: offers several new features.

It designs resistive ATTENUATORS.
It has several powerful TRANSFORMATIONS
It also has a giant HELP system




In this IC-Databook Software you will find pin assignments, connection layouts, function tables and the most important specifications available for the 40x.. and the 74x.. IC series.

In the actual software version are already the data of more than 230 different IC's. You can easily add additionally IC's add or edit existing IC's and exchange them with other users.

The software runs with Windows 95, 98, ME, NT, 2000 and XP


6)Power Supply Calculator 2.071


7)Resistor Workshop v 1.01

Info: Resistor Workshop is Program is an extremely handy tool for finding standard values of resistance to meet a specific need. This software is especially geared towards calculating values for voltage devider circuits


8)Schematic Symbol Reference 1.0


This is an offline version of the Schematic Symbol Reference. It contains all the same info, but is a standalone program that requires no Internet connection to run. This will run under Windows 95, Windows 98 and NT4 Server and Workstation.


9)Semiconductor Amplifier Selection Guide


Selguide is a software tool designed to guide the user in selecting our Operational Amplifier, Buffer and Comparator products by enabling the user to enter in a few key parameters and have a list of devices meeting those parameters returned to them.

Included in the results is a summary table of key device parameters and pricing information, as well as a link back to view our Web site product folders for the chosen devices (You must have a Web browser and a live Internet connection to view the web pages).

Installation of the Selguide software is simple and painless. Selguide does not add to or modify your system files at all and is completely self contained within one folder. Selguide fits nicely in a corner of your Desktop or Laptop PC for easy future reference.


10)The Hardware Book v1.3


The Hardware Book contains misc technical information about computers and other electronic devices. You'll find the pin out to most common (and uncommon) connectors available, as well as info about how to build cables.


11)Tube Data Sheet Locator Personal Edition v1.0.1.31


The TDSL (Tube Data Sheet Locator) Personal Edition provides information right on your PC for a large number of vacuum tubes.

Advanced searching facilities help you to compare different types and make substitutes for hard to find vacuum tubes.

It is intended to be of interest to amplifier technicians, amp modifiers, hobbyists and students.

Key features

Searching: Search by designator - for example, searching on 6K will bring up all vacuum tube types starting with 6K and display them in the filter window. Simply browse through the list looking at the data. Search by parameters - find vacuum tubes based on their parameters like maximum rating or pinout. "Soft matches" are allowed by finding approximate values - you can decide how close it needs to be.
Filter panel: Displays the vacuum tubes that meet your search criteria. Simply click on the tube type to see the data.
Pinout tab: Shows the basing diagram and pin list for over 4,300 vacuum tubes.
The example shown (and following examples) are for the 6K6-GT


12)Wire Gauge Calculator


UltraCAD?s freeware calculator will do gauge conversions and PCB trace resistance calculations for you. Complete info can be found at the manual included at the downloadable zip file.




Association of Computer Repair Business Owners


The Association of Computer Repair Business Owners (ACRBO) was founded in 2009 to support the growing network of Computer Repair business owners worldwide. ACRBO is dedicated to promoting industry education and improving consumer relations with professionalism and integrity.