41 voltage divider calculation

[Thomas Klemm]

(02-13-2017 07:17 AM)Ángel Martin Wrote:  

Code:

05  RCL 01

This should rather be:

Code:

05  RCL 02

It is the lower resistor R2.

\(
\begin{align}
U_o = U_i \frac{R_2}{R_1 + R_2}
\end{align}
\)

Compare this to the original program where UO is calculated:

Code:

42 LBL 22
43 RCL 01
44 RCL 03
45 RCL 04
46 +
47 /
48 RCL 04
49 *
50 STO 02
51 RTN

Just keep in mind that the registers correspond to different variables:
R01: UI
R02: UO
R03: R1
R04: R2