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Circuit Source is a trusted custom power supply manufacturer with over 20 years of experience designing and supplying high-quality AC-DC power solutions.
At Circuit Source, we manufacture several types of AC-DC power supplies designed for consumer electronics, commercial equipment and industrial applications. All of our power supplies convert AC mains electricity into regulated DC power, ensuring your devices operate safely and reliably. Whether you need a plug-top adapter, USB charger, desktop power brick or industrial power supply, we can design a solution tailored to your product.
Plug-top adapters are compact AC-DC power supplies that plug directly into a wall socket. Commonly used for smaller electronic products.
Available with UK, EU, US, or international plug options for global products.
Desktop power supplies, often called power bricks, are external AC-DC power adapters used for devices that require higher power levels.
Designed for continuous operation and high reliability in commercial products.
Open frame power supplies are designed to be installed inside electronic equipment. Ideal for integrating the power system directly.
Compact modules offering high efficiency and flexible installation options.
We manufacture plug-top adapters, desktop power bricks, open-frame internal power supplies, and fully custom AC-DC solutions. All are available with global safety certifications.
Absolutely. We work from your electrical specifications — voltage, current, efficiency requirements, connector type, and form factor — to design a solution tailored to your product.
Our power supplies can be certified to UL, CE, UKCA, FCC, and RoHS standards. Medical-grade certifications (IEC 60601) are also available for healthcare applications.
Standard projects run 4-8 weeks depending on complexity. Fast-track prototyping is available for qualifying projects.
Yes. We design USB-C Power Delivery (PD) chargers and adapters supporting fast-charging protocols for consumer electronics and industrial devices.
Explore more of our engineering capabilities.
From plug-top adapters to open-frame industrial units — tell us what you need.
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