Month: August 2015

How To Test Circuit Board Components Properly

Testing a circuit board may seem like a daunting task if you are not technically proficient. However, IGI plotter specialists attest that, testing circuit board components like transistors, capacitors, resistors and integrated circuits may be done to some extent without the need for removing the components from the board itself. Here are some tips.

Disconnect The Power

First thing that you need to do is to disconnect the power from the printed circuit board and then discharge all inductors and capacitors, which may pose a safety concern. Confirm if the wiring on the board has been correctly done by looking at the physical condition of each component located on the board. Look for the presence of charred, cracked or loose parts. Replace and repair as needed.

Connect and then turn on the power to the circuit board once more and then measure the voltages on the inputs and outputs of each o the components present. You may use a voltmeter to determine voltage level of all the components’ input and output pins. For each voltage level checked, determine if it features the correct voltage level. Rule out a component as a defective one if all the voltage level inputs and outputs are correct.

Take out a component if its entire input pin have the correct voltage but one or more of the output pins is at the wrong output voltage and then turn the power back on. Measure the voltage where the measured components once were. Replace a component if the voltage measurements are at the correct voltage levels with the component removed.

Phototooling toolbox specialists, recommend that you measure the voltage levels of the output pins of the component that attaches to the input pins of the first component checked. Perform this task only if component A’s input pins have a wrong voltage level. Look for the wiring error if the output voltage measurements of component B’s pins are not the same as the input voltage on component A’s pins.



A Simple Guide to Floating Cover Systems

Known sometimes as floating lagoon covers, floating cover systems are used in methane farms and anywhere where there is a large area of water or liquid that needs to be contained. The kind of fabric that is used as well as the specs for the cover may vary depending on the type of material that needs to be contained. The cover may float simply on the surface of the material in the tank, fluctuating and remaining in contact with the fluid level or it can be suspended over the material or inflated by collected gases.


floating coversFloating covers may have a skirt on all four sides, which eliminates the necessity to tie the collection system to the berm. The design of the modular tank covers makes it possible for multiple units to be used in conjunction with one another. By creating a design that is not too big for ease of handling, expensive installation costs are eliminated.

The covers are made up of a material that is perfect for biogas collection. It is highly resistant, tough and has a low gas permeability which makes it ideal for the collection of biogases like methane as well as for use as a float cover material.


Appropriately designed and installed floating cover systems prevent severe fluid loss due to evaporation, reduce chemical demand and improve the quality of water by minimizing or totally preventing contamination from airborne particulates, bird droppings, pollen and other contaminants. The covers block sun exposure and hence prevent photosynthesis that causes algae production. The covers are used in anaerobic digester systems in order to capture organic gases as well as minimize the biological oxygen demand.

They are ideal for:

  • Reducing odor contamination in the immediate environment
  • Control of fluid evaporation
  • Prevention of wildlife contamination of the water source
  • Serves as a barrier gas collection
  • Temperature insulation
  • Rainwater barrier & collection


Since being introduced in the market over 30 years ago, floating cover systems serve an important function for many applications. They can provide a service life of at least twenty years. Advancements in technology provide a low cost solution that is really true value for money.