1
HF Beacons / Re: Long Dasher On 4069.4
« on: April 16, 2024, 2240 UTC »
"Using the LM339 comparator and a 78L05 low dropout regulator for a voltage reference, a simple low voltage disconnect can be built"
That's true. I'm a big fan of the little 78L05's . They're cheap and efficient and perfect for QRP applications.
That's true. I'm a big fan of the little 78L05's . They're cheap and efficient and perfect for QRP applications.