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Voltage to Current Converter Makes a Flexible Current Reference - 09/18/03 EDN-Design
Ideas: The voltage-to-current converter in Figure 1 can both source and sink current.
The circuit is more flexible than some traditional current references that require
different topologies for current sourcing and sinking. Also, you can easily adjust the
value of the current reference by simply adjusting the circuit's input
voltage.....(design idea added 12/04)
Voltage-to-current converter drives white LEDs - 06/27/02 EDN-Design Ideas: You
sometimes need to drive a white LED from one 1.5V battery. Unfortunately, the forward
voltage of a white LED is 3 to 4V. So, you would need a dc/dc converter to drive the
LED from one battery. Using the simple circuit in Figure 1, you can drive one white
LED or two series-connected green LEDs, using only a few components.....(design idea
added 9/03)