I will design 24v dc power supply circuit

This is 0.1 TO 24V Dual Channel DC Power Supply. One channel had FIX 4.2V Output Voltage while The other is Variable.

Applications of the Dual-Output DC Power Supply:

1. Safe Lithuim-ion Battery Charging: The Dual-Output DC Power Supply allows user to charge Lithuim-ion Batteries safe connecting the fixed 4.2V output channel. It will save lifespam of the Lithuim-ion battery. 2. Simultineous Prototype Testing: In electronics development, we often need to power a microcontroller (like an ESP32 or Arduino) while simultaneously testing a peripheral motor or actuator at a higher voltage. The Dual-Output DC Power Supply allows user to use the fixed 4.2V to power the Microcontroller while use the variable output voltage channel to power the Motor or Actuator. 3. IoT & Wearable Device Development: Engineers developing IoT devices or smart watches need to test how their software handles different battery level. The Dual-Output DC Power supply allows Engineers to simulate a draining battery dropping from 4.2V to 3.0V to test low-power software alert using variable output channel while fixed 4.2V output channel as a safe VCC to power the external debugging tools or sensor without any risk.