![power supply - Why are some AC/DC adapters light while others are heavy? - Electrical Engineering Stack Exchange power supply - Why are some AC/DC adapters light while others are heavy? - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/5Q704.jpg)
power supply - Why are some AC/DC adapters light while others are heavy? - Electrical Engineering Stack Exchange
![Amazon.com: TMEZON 12 Volt 2A Power Adapter Supply AC to DC 2.1mm X 5.5mm Plug 12v 2 Amp Power Supply, Wall Plug Extra Long 8 Foot Cord : Electronics Amazon.com: TMEZON 12 Volt 2A Power Adapter Supply AC to DC 2.1mm X 5.5mm Plug 12v 2 Amp Power Supply, Wall Plug Extra Long 8 Foot Cord : Electronics](https://m.media-amazon.com/images/I/618rwJklyVL._AC_UF894,1000_QL80_.jpg)
Amazon.com: TMEZON 12 Volt 2A Power Adapter Supply AC to DC 2.1mm X 5.5mm Plug 12v 2 Amp Power Supply, Wall Plug Extra Long 8 Foot Cord : Electronics
![120w Universal Adapter 19v | 24v Notebook Ac Dc Adapter | Ac Adapter Notebook 19v - Ac/dc Adapters - Aliexpress 120w Universal Adapter 19v | 24v Notebook Ac Dc Adapter | Ac Adapter Notebook 19v - Ac/dc Adapters - Aliexpress](https://ae01.alicdn.com/kf/Ha62b46b62c7945c482a0950b4daed139c/Adjustable-120W-220v-110v-to-12V-15V-16V-18V-19V-20V-22V-24V-Car-Charger-Universal.jpg_Q90.jpg_.webp)