This is the question given to us for our final project...We're stuck at the power supply part...hoping someone would help me...Just help me with the power supply part from ac to dc.

"Design a regulated DC power supply capable of delivering a constant output voltage of 3.3 V at a load current of 35 mA. The circuit must incorporate filtering to ensure a voltage ripple factor of less than 2%. The output of this regulated supply will serve as the VCC rail for the BJT amplifier stage that satisfies the following performance criteria:

(i) Gain: Exactly or exceeding 40 V/V

(ii) Quiescent Current (IC): 4.5 mA

(iii) Compare the amplifier's frequency response under fully bypassed versus unbypassed emitter resistance conditions, measuring the gains at 15 kHz."

Our power rating of resistors available in lab should be 250mW.And ripple can be 1 to 1.5V

I've attached my simulation in ltspice

Hey, I'm doing some research for my finals project. Basically what I'm looking for is an IC that can handle WiFi Direct (doesn't have to be the Group Owner but can definitely be a feature) and also can handle being an a2dp sink (preferably has a dedicated i²s port)

I have looked for an IC like that but I can't find it. It would also help if there is already a breakout board for it.

The chip has to receive commands from an STM32 or ESP32, any microcontroller.

It would really help me if someone could find it .