Tags: Relay

  • Panasonic Relays in EV charging stations
    January 14, 2016
    The global adoption of electric vehicles underlines the need for quality relays and components to ensure a robust electric vehicle supply equipment (EVSE) infrastructure. According to the International Energy Agency, the number of electric vehicles worldwide in 2020 is projected to grow to 20 million. As the market expands, the demand for more electric vehicle charging stations is becoming increasingly necessary.
  • 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.
  • February 21, 2012
    Relay Contact Resistance Contact resistance is a crucial electrical characteristic. The resistance between the contact terminals determines the Relay's ability to carry current. The contact resistance is subject to change during the life of the Relay. Based on lab investigations and testing, abnormal contact resistance has often been found with the following conditions:
  • January 24, 2012
    PhotoMOS Relays In previous articles, we've shown how a PhotoMOS works, and how to optimize certain characteristics. Here, we talk about the balance between Output Capacitance  and On-resistance (C vs R).
  • January 19, 2012
    PhotoMOS Relays In the last PhotoMOS blog post, we discussed how to select the correct capacitor for the application. Now we'll move on to switching time. Minimizing Turn-on Time There are some cases where turn-on time is crucial, and the circuit designer must find ways to reduce the amount of time it takes from applying the LED forward current, until the MOSFET gate is closed. Typically, higher LED current will lead to faster switching time. On the other hand, it will increase power consumption and reduce the LED life.