William At MyBlueRoom
New Member
In Elektor March 2006 pg 73 an Energy saver for relays schematic was publised as a design tip. Although it specified a green 20ma LED the other values were a little broad and no theory or calculation data was given.
It would be easy to add this to the schematic and I don't need to use RB3 as a PWM (I use TIMER2 for a 1/256 RTC & display refresh on the Cricket thermostat) so this would be a rev H change.
Any suggestions for the following schematic? C20 & R8?
It would be easy to add this to the schematic and I don't need to use RB3 as a PWM (I use TIMER2 for a 1/256 RTC & display refresh on the Cricket thermostat) so this would be a rev H change.
Any suggestions for the following schematic? C20 & R8?