Categories: Relays & Contactors

  • October 10, 2012
    Solid-State Relays In Test And Measurement Systems To keep pace with advances in the electronics industry, test and measurement systems increasingly require advanced solid-state Relays that combine low capacitance, low on-resistance, physical isolation, and high linearity. All these characteristics play an important role as data acquisition devices become faster and more precise. Here’s why:
  • August 06, 2012
    Using PhotoMOS Relays For More Than Test And Measurement PhotoMOS Relays are not only for test and measurement applications. These solid state Relays can also switch and protect small motors, power supplies, and control devices with load currents up to 6 amps. To do this, PhotoMOS Relays combine high switching speed with low control current and reliable overcurrent protection. 
  • June 13, 2012
    Relay Contact Gap One of the most important considerations for applications that require high surge voltage protection is relay contact gap.  This is because the greater the distance between contact terminals, the higher surge voltage the Relay can withstand. Therefore, a safe contact gap distance provides protection from short-circuit conditions that could damage your product.
  • May 01, 2012
    LED Current And PhotoMOS Lifespan Panasonic PhotoMOS Relays are well known for their extremely long lifespan. However, there is a caveat - engineers must take into consideration the LED current when incorporating PhotoMOS in their designs. Let's take a look at how LED current defines a PhotoMOS Relay lifespan. LED Characteristics The LED life curve below shows LED power getting lower in proportion to the number of hours of use. It is not the number of operations, but the number of hours the LED current is applied.    
  • April 19, 2012
    PhotoMOS Relays And Battery Monitoring PhotoMOS Relays can be used to monitor battery charge, which in turn can extend battery life and avoid hazardous situations. Battery monitoring is highly useful for Uninterruptible Power Supply (UPS) applications because they need to be reliable. The UPS is only as reliable as the batteries are healthy and able to provide proper back up power when needed.
  • April 06, 2012
    Pilot Duty Ratings A Relay can be assigned a Pilot Duty Rating when it is used for switching loads on another relay, or solenoid valve coils. It can be a direct current (DC) rating, or an alternating current (AC) rating, as shown in the table at the bottom of this post. The Pilot Duty Ratings are obtained after performing product qualification tests.  These tests are performed at the voltage and current values provided using the information in Table 1 below, with a 0.35 power factor.
  • March 23, 2012
    Relay Construction The broad range of applications and environments in which Relays are used calls for different types of construction to protect their internal components. Panasonic's electromechanical Relays have a few different types of protective construction so that they can be used in a wide variety of applications.
  • March 13, 2012
    Thermal Electromotive Force Over the years, test and measurement companies have sought for a feature in relays that provides an accurate reading at low current. This is important because at very low current, there is a tendency for inaccurate measurements to occur, thus causing false readings. This feature is referred to as Thermal Electromotive Force (EMF), and is found in a few relays.

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