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About RF Generators
RF generators provide power for thin film processing equipment, semiconductor fabrication systems, plasma generation, induction heating, telecommunications applications, and radar equipment. RF generators are also used to power computers, computer peripherals, medical devices, magnetic devices, and test equipment. Single-phase AC inputs are used with lower voltage applications. Three-phase AC inputs are used with high voltage power supplies. Products that meet U.S. military specifications (MIL-SPEC) accept high frequency inputs, typically in the 400 Hz range. Common AC input voltages include 115, 208, 230, and 480 VAC. Common AC input frequencies are 50 and 60 Hz. Output specifications for RF generators include output frequency, voltage and current; adjustable frequency, voltage, and current; and output power, an amount expressed in watts (W). Automatic frequency tuning (AFT) reduces harmonics, improves speed and reliability, and eliminates the tuning elements found in many traditional networks.
There are several mounting styles and form factors for RF generators. Surface mount technology (SMT) adds components to a printed circuit board (PCB) by soldering component leads or terminals to the top surface of the board. By contrast, through hole technology (THT) mounts components by inserting component leads through holes in the board and then soldering the leads in place on the opposite side of the board. Some RF generators are rack-mounted, wall-mounted, chassis-mounted, or designed to sit atop a desktop or shelf. Others have an open frame or mount on a standard DIN rail. DIN is an acronym for Deutsches Institut für Normung (DIN), a German national organization for standardization. Some suppliers provide RF generators that enclose the input and output connection, include a floor-standing cabinet, or have a PCB form factor. Modular products are also available.
Selecting RF generators requires an analysis of special features. Battery backups provide emergency power for continuous outputs. Hot swappable devices can be replaced without shutting down the system. Overcurrent protection limits or shuts down the current output during overcurrent conditions. Similarly, overvoltage protection limits or shuts down the voltage output during overvoltage conditions. Some RF generators are temperature compensated, water cooled, fan cooled, or include an integral heatsink. Others provide DC outputs, a computer interface that can be used for remote monitoring or control, or a remote on/off switch. Power factor correction is used to correct the phase difference between voltage and current in order to optimize power output. Pure sine devices produce very high quality, sine waveform outputs. Weatherproof products can withstand prolonged exposure to outdoor conditions such as rain or snow.
Products & Services Related to RF Generators
AC-DC Adapters
AC-DC adapters accept AC input voltage directly from a wall outlet, and output DC voltage.
DC Power Systems
DC power systems provide continuous DC power through multiple outputs. Most DC power systems include a battery backup, temperature compensation, and other features.
High Voltage Power Supplies
High voltage power supplies use linear technology to provide one or more DC outputs at voltage levels of hundreds or thousands of volts.
Medical Power Supplies
Medical power supplies produce conditioned outputs for medical devices, instruments, and equipment.
Power Rectifiers
Power rectifiers are electrical devices that convert alternating current (AC) to direct current (DC). They are an integral part of telecom rectifiers for the telecommunications industry, and in battery chargers, DC power systems, and other power system devices.
Power Supplies
Power supplies are devices that produce AC or DC power. This grouping includes current sources, DC power supplies, AC-DC adapters, DC-DC converters, AC power sources, and DC-AC inverters.
Programmable Power Supplies
Programmable power supplies are digitally controlled power sources that provide accurate and adjustable levels of voltage, current, and frequency. They include a processor, voltage/current programming circuits, current shunt, and voltage/current read-back circuits.
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