Power Supply Adjustable 0V-30V DC/2A

It is a simple circuit regulated power supply, based on the known LM 723, that drives a transistor Q1 [2N3055]. The regulation of voltage, of expense becomes with potentiometer R1 from 0v-30v DC roughly. In order to achieve 30 V, the transformer of supply TR1 must provide all the current that the load requests; otherwise, the output voltage will be found at levels of roughly 26 V. Essential is the use of a good heatsink for transistor Q1, as well as good quality of potentiometer in the place of R1.

The described circuit is a linear voltage regulator power supply utilizing the LM723 integrated circuit, which is known for its versatility in providing stable output voltage. The LM723 regulates the output voltage by controlling the base current of the power transistor Q1, a 2N3055, which is capable of handling high currents. The configuration allows for output voltage adjustments from 0V to approximately 30V DC, depending on the setting of the potentiometer R1.

The power supply design requires a transformer (TR1) that can deliver sufficient current to meet the load's demands. It is crucial that the transformer is rated appropriately; if it does not provide adequate current, the output voltage may drop to around 26V under load conditions. This drop indicates that the transformer is not fully supporting the circuit's demands, which can lead to unstable operation.

Thermal management is a significant consideration in this design. The 2N3055 transistor must be equipped with an adequate heatsink to dissipate the heat generated during operation, particularly when supplying higher currents. Failure to provide sufficient cooling can lead to thermal overload and potential failure of the transistor.

The potentiometer R1 should be of good quality to ensure stable voltage adjustment and should be rated to handle the power requirements of the circuit. Selecting a potentiometer with a suitable power rating is essential for reliable performance.

Overall, this simple regulated power supply circuit is effective for various applications requiring adjustable DC voltage, provided that the components are selected and configured correctly to handle the expected load and thermal conditions.It is a simple circuit regulated power supply, based on the known LM 723, that drive a transistor Q1 [2N3055]. The regulation of voltage, of expense becomes with potentiometer R1 from 0v-30v DC roughly. In order to we achieve 30 V, will should the transformer of supply TR1, it gives all the current that it asks the load, differently the output voltage it will be found in the levels of 26 V roughly.

Essential is the use of a good heatsink for transistor Q1, as well as good quality of potentiometer in the place of R1. 🔗 External reference