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diff --git a/library/deviceModelLibrary/Switch/README.md b/library/deviceModelLibrary/Switch/README.md new file mode 100644 index 00000000..bfb35788 --- /dev/null +++ b/library/deviceModelLibrary/Switch/README.md @@ -0,0 +1,33 @@ +# Voltage Controlled Switch + +The Voltage Controlled Switch block represents the electrical characteristics of a +switch whose state is controlled by the voltage across the input ports (the controlling +voltage). + + +fig: Voltage control switch + +This block models either a variable-resistance or a short-transition switch. For +a variable-resistance switch, set the Switch model parameter to Smooth transition +between Von and Voff. For a short-transition switch, set Switch model to Abrupt +transition after delay. + +When the controlling voltage is less than the Threshold voltage, VT parameter +value minus the Hysteresis voltage, VH parameter value, the switch is open and has +a resistance equal to the Off resistance, ROFF parameter value. +When the controlling voltage is greater than or less than the Threshold voltage, +VT parameter value by an amount less than or equal to the Hysteresis voltage, VH +parameter value, the voltage is in the crossover region and the state of the switch +remains unchanged + +The schematic to test the proposed voltage controlled switch is shown below. +It is a simple circuit where a pulse source is connected to the switch followed by a +resistor. +When the switch is turned ON, then at the Vout the source voltage can be +obtained, however, the switch model is given some value for Ron meaning the amount +of ron will be offered by the switch when it is turned ON. +Similarly, when it is turned off then it will offer the resistance set in roff. + +``` +.model switch1 sw( vt=0.05 vh=1 ron=1 roff=1e12 ) +``` |