Material: 3.7V, 5V DC power supply, the general number of two transistor, any resistance to a number of resistance, require 1.2V DC voltage, and power requirements as large as possible. LM317, LM385 this thing is good, but the hands did not, do not want to run this trip because of this thing to buy. The The Can I use multiple diodes in series to get 1.2V? Does this offer high power? Or is there any other good advice? Hope that the circuit design as simple as possible, I hope we can help.
The simplest is the diode buck, but the load current changes in the larger case, the stability is not too high.
The best is to use MOS regulator for the regulator, the circuit is slightly more complex.
Do not know how much current you need for the load, do not know whether the current value of the load required is constant, or how much the required current in the normal working state changes, do not know the need to output the 1.2V voltage stability needs How high can not give a specific program.
Ordinary transistor is not high power. Is like LM317 so big or bigger than him? If this is the case. Very good to do. How much power to how much power. See figure. Haha. How much input voltage can be But if the difference between the output and the input is too big, it will heat up.
This figure is based on the principle of diode voltage drop of 0.7V. You can measure the output voltage. According to the need to add and subtract transistor B pole of the diode ... ...
