LEDs

When driving LEDs with RC4 dimmers, is a current-limiting resistor required? Or can the LEDs be connected directly to the dimmer outputs?

When driving LEDs with RC4 dimmers,  is a current-limiting resistor required?  Or can the LEDs be connected directly to the dimmer outputs? A resistor must be used.  I generally recommend starting with a relatively low voltage battery.  Six volts works well, either lead-acid, or NiMH.  Then, use an online calculator to determine the best resistor [...] - Continue Reading »

What is the best rechargeable battery to use with a 4W LED?

Question: What is the best battery solution for a portable dimming situation? We are using a 4 watt LED lamp and need it to run for 10 minutes and have 4 hours of standby time. Thanks for your Help Andrew Answer: Hey Andrew, We must calculate the battery requirement for the load (4W for 10 [...] - Continue Reading »