I have a question how can i create DTMF tones with a MCU like 90S4433 or any other of the Atmel family, and how can i receive with a MCU with out any other component directly from the MCU with only a typical parts for the corect working of the device.
Lisen the curent set from a trimer check that and the 10 A it is from the corect transform all the project it work with two comparative the one is for the Volt and the second it is for the Amber, you may use anything you want with this theory but you mast consider the transformer it has a...
This construction it is very flexible i have see the same circuit to have an output 0-30v and 10A with limit curent the only ghange it was to same parts and of course the promlem with the temperature of the two tranzistor and the registor. i have this PSU but the 0-30v-3A for 5 years and i...