Switching regulator controls CCFT

You can control the current in a cold-cathode fluorescent tube and, hence, its brightness with a switching-regulator IC. Often used as a backlight, a CCFT requires an adjustable, high-voltage, ac-power source. EMI and tube-lifetime considerations dictate a sinusoidal waveform. A resonant circuit is best for generating sinusoids.

Current Regulators For Light Emitting Diodes

This current regulator circuits that can be used to drive light emitting diodes. As always, take time to do some testing before attempting to use these circuits in actual applications.

Power-line Appliance Controller