News post & update: eleccircuit.com |  |
| FET Constant current drivers for LED display using BF256 Posted: 16 Jan 2014 04:21 PM PST This is a Constant current drivers circuit for drive LED display which can use FET-BF256 instead resistor so well. Normally when you use LED display in any circuits often use a resistor for limit LED current. Because easy and cheap. But it is not best, this way is ideal for the stable voltage source only. […]  |
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