Each of the following diagrams illustrates how the same basic circuit can be used to create an LED-lit accessory that can be switched on an off. These circuits are similar to the practice LED circuit ...

1. Gather your kit You'll need LEDs for surface-mount technology -- the small components you see on circuit boards -- to lie flat against your page. And get a power supply too: "Coin cell ...

It seems deceptively simple to establish galvanic isolation with the help of optocouplers between circuits that operate at different ground potentials. Optocouplers draw power from the isolated ...

T1, T2: 2N3904 transistors T3: LTR-3208E phototransistor LED1, LED2: 10mm diffused yellow LEDs R1: 5kohm resistor R2, R3: 50ohm resistors IC1: Atmel ATtiny13 Source: 2xAA battery case with batteries ...

The first book focuses on DC Circuit Fundamentals, while the other explores LEDs, transistors, and oscillators. The ‘books’ are available now and sell for $37 each.

This means it’s possible to short circuit an LED strip without actually tripping the overcurrent protection on something like an ATX power supply, which may be fused at well over 10 amps.

Power and Series Circuits: The electrical power formula is introduced and students learn how to use Ohm’s Law and the power formula to solve problems. They also learn to draw diagrams for series ...

Imagine doodling about in your Moleskin, throwing some batteries and LEDs onto the page and having your sketches illuminated like a Christmas light arrangement. Swapping the metallic ink of gel ...