From c9af0617056dccaa574fe5da7d6b38af9f8de278 Mon Sep 17 00:00:00 2001 From: JChristensen Date: Wed, 1 Aug 2018 10:57:50 -0400 Subject: [PATCH] Add circuit diagram. --- README.md | 1 + 1 file changed, 1 insertion(+) diff --git a/README.md b/README.md index 60bba06..b07db93 100644 --- a/README.md +++ b/README.md @@ -25,6 +25,7 @@ This library is specific to the AVR microcontroller architecture and will not wo The TA17L-03 current transformer is rated at 10A maximum and has a 1000:1 turns ratio. A 200Ω burden resistor is recommended. A 10A RMS current in the primary will generate a 10mA current in the secondary and therefore 2V across the burden resistor. However the peak voltage will then be √2 * 2V = ±2.8V (assuming a sine wave) which exceeds the 2.5V DC bias provided by the circuit below. Therefore the measured current should be limited to about 8.5A RMS (giving ±2.4V P-P) or perhaps a smaller burden resistor could be used if larger currents need to be measured. ## Typical Circuit +![](https://raw.githubusercontent.com/JChristensen/CurrentTransformer/master/typical-circuit.png) ## Enumeration ### ctFreq_t