The other day, I came across an interesting device called a current limiting diode:
One producer is MCC (www.mccsemi.com). It makes a 20 mA version (CLD20), which was the highest current rating I could find. Other devices seems to be in the low, single-digit mA range. A review by Sze Chin (ECN, May 15, 2000, p.49-53) gave some interesting applications, including simple triangle and saw tooth wave generators based on charging a capacitor.
The only application the datasheet shows is its use for LED strings (http://61.222.192.61/mccsemi/up_pdf/CLD20(DO-214AC).pdf ).
Does anyone here have experience with them? Specifically, if one uses a CLD to create a triangle wave, how linear are the ramps near the top? I would order some and experiment, except they are a little hard to find in stock at DigiKey and Mouser.
John
One producer is MCC (www.mccsemi.com). It makes a 20 mA version (CLD20), which was the highest current rating I could find. Other devices seems to be in the low, single-digit mA range. A review by Sze Chin (ECN, May 15, 2000, p.49-53) gave some interesting applications, including simple triangle and saw tooth wave generators based on charging a capacitor.
The only application the datasheet shows is its use for LED strings (http://61.222.192.61/mccsemi/up_pdf/CLD20(DO-214AC).pdf ).
Does anyone here have experience with them? Specifically, if one uses a CLD to create a triangle wave, how linear are the ramps near the top? I would order some and experiment, except they are a little hard to find in stock at DigiKey and Mouser.
John