Building an Enabled NAND‑Gate SR Latch: Parts, Design, and Operation

Thyristors are a family of bipolar‑conduction semiconductor devices constructed from alternating N‑P‑N‑P layers. The family includes silicon controlled rectifiers (SCRs), TRIACs, gate turn‑off switches (GTOs), silicon controlled switches (SCSs), AC diodes (DIACs), unijunction transistors (UJT), and

TRIACs are the bidirectional counterparts of silicon controlled rectifiers (SCRs). By connecting two SCRs back‑to‑back, a TRIAC can conduct current in both directions, making it ideal for AC power control. TRIAC: SCR equivalent and schematic symbol. While SCRs find common use in high‑power motor dr

The circuit discussed earlier is far from practical and can be hazardous. Directly connecting the poles of a voltage source with a single wire creates a short circuit, allowing enormous current to flow. The resulting energy release—usually in the form of heat—can be dramatic and dangerous. Practical

While the ampacity rating of a conductor is typically a design limit that should never be exceeded, fuses are an exception. In these devices the very design is to surpass the rated current and then safely interrupt the circuit. What Is a Fuse? A fuse is an electrical safety device that contains a co