The **R-114-R** is a specific electronic component primarily identified as a **High-Voltage Reed Relay**, often associated with manufacturers like *Hasco* or specialized high-voltage relay suppliers. It is designed to switch high-voltage circuits using a magnetic field to actuate physical contacts within a sealed glass tube. --- ### 1. Key Technical Specifications Below are the typical parameters for an R-114-R type relay: | Feature | Specification | | :--- | :--- | | **Contact Form** | Form A (Normally Open) | | **Max Switching Voltage** | Up to 10,000V DC (10kV) | | **Max Switching Current** | ~0.5A to 1.5A (Application dependent) | | **Coil Voltage** | Typically 6V, 12V, or 24V DC | | **Insulation Resistance** | > $10^{10}$ $\Omega$ | | **Contact Material** | Rhodium or Tungsten | --- ### 2. Major Electronic Sub-Components The R-114-R consists of four primary internal elements that work in unison: 1. **The Reed Switch:** Two ferromagnetic blades (reeds) hermetically sealed in a glass envelope filled with inert gas. The "R" designation often implies high-reliability rhodium plating for low contact resistance. 2. **The Electromagnetic Coil:** A copper wire winding wrapped around the glass tube. When current flows through this coil, it creates a magnetic field. 3. **Encapsulation/Housing:** Usually potted in an epoxy resin or a plastic rectangular shell. This provides high dielectric strength and protects the sensitive glass tube from mechanical shock. 4. **Terminals/Pins:** Stiff metal leads designed for Through-Hole (THT) mounting on a PCB. --- ### 3. Functional Operation The device operates on the principle of **Electromagnetism**: * **Off State:** The reeds remain separated by a small gap. Due to the vacuum or inert gas, this gap can withstand thousands of volts without "arcing" (jumping). * **On State:** When the control circuit applies voltage to the **coil**, the resulting magnetic flux pulls the two reeds together, completing the high-voltage circuit. * **Safety Note:** Because the control side (coil) and the load side (reeds) are physically separated by glass and air, it provides excellent **galvanic isolation**. --- ### 4. Common Applications Due to its high-voltage rating, the R-114-R is used in specialized equipment: * **Medical Electronics:** Defibrillators and X-ray machines. * **Test Equipment:** Insulation testers and Hi-Pot (High Potential) testing stations. * **Communication:** Antenna switching in high-power radio transmitters. * **Industrial:** Laser power supplies and ESD (Electrostatic Discharge) simulators.