General-purpose-power-supply

Description: The supply 6-66 can be utilized for output voltages ranging from 1 to 35 V. The line transformer must be selected to provide approximately 1.4 times the desired output voltage from the positive side of filter capacitor C1 to ground. Potentiometer R2 adjusts the output voltage to the desired level by modifying the reference input. Rsc serves as the current limit setting resistor. Its value is determined as follows: for a maximum output current of 1 A, Rsc is approximately 0.65 ohms. The 1 kΩ resistor, Rs, is a light-load resistor designed to enhance the no-load stability of the supply.

The supply circuit, designated as 6-66, is capable of delivering adjustable output voltages within the range of 1 to 35 volts. The design of this circuit incorporates a line transformer that is critical for stepping up the input voltage. The transformer should be chosen to yield a secondary voltage that is roughly 1.4 times the intended output voltage, ensuring that sufficient voltage is available at the positive terminal of filter capacitor C1. This capacitor plays a vital role in smoothing the output voltage by filtering out any ripple that may be present.

The output voltage is fine-tuned using potentiometer R2, which acts as a variable resistor. By adjusting R2, the reference input to the control circuit is modified, allowing for precise control of the output voltage. This feature is particularly useful in applications requiring specific voltage levels.

Rsc, the current limit setting resistor, is a critical component in safeguarding the circuit against overcurrent conditions. The value of Rsc is calculated based on the maximum desired output current. For instance, if the target maximum output current is 1 A, Rsc can be approximated as 0.65 ohms. This resistor serves to limit the current flowing through the circuit, thus protecting both the power supply and the connected load from potential damage due to excessive current.

Additionally, the circuit includes a 1 kΩ resistor, labeled Rs, which is employed as a light-load resistor. This component is specifically designed to enhance the no-load stability of the power supply. By providing a minimal load during idle conditions, Rs helps maintain stable voltage levels and improves overall performance, ensuring that the output voltage remains consistent even when the load is not present.

In summary, the 6-66 supply circuit is a versatile and adjustable power supply solution, featuring components that work together to deliver reliable performance across a range of output voltages while ensuring safety and stability in operation.The supply 6-66 can be used for supply output voltages from 1 to 35 V. The line transformer should be selected to give about1.4 times the desired output voltage from the positive side of filter capacitor C1 to ground. Potentiometer R2 sets the output voltage to the desired value by adjusting the reference input. Rsc is the current limit set resistor. Its value is calculated as: For example, if the maximum current output is to be 1 A, Rsc ~ 0.65/1.0 ~ 0.65 0. The 1-KO resistor, Rs, is a light-loaded resistor designed to improve the no-load stability of the supply.