Description
Product details:
LAM Research 660-900984-008 RF Generator
Key words: 660-900984-008
Net weight (Kg) : 2.058Kg
Condition: 100% original
Warranty: 1 year
Packaging: 100% original
Delivery time: TNT, DHL, FEDEX, EMS, UPS
Time of payment: Telegraphic transfer
Delivery time: 3-5 days
The requirements for high frequency generator are:
1. The oscillation frequency of the high-frequency cow is generally 27.12MHz or 40.68MHz, and the output power is generally 1 ~ 1.5kW.
2. The smaller the reflected power, the better, generally less than 10W.
3. The output power of the high-frequency generator is required to have excellent stability, because as long as there is 0.1% drift of the power transmitted to the ICP, the emission intensity can produce more than 1% change. Therefore, the power change of the high-frequency generator must be less than ±0.05%.
4. High frequency generator should have a good grounding device, the smaller the grounding resistance, the better, generally not more than 4 Ω is appropriate
There are two main types of high-frequency generators:
(1) “self-excited” generator (self-excited oscillation of electronic tube). It can make the frequency of the oscillating current vary with the impedance of the plasma. Self-excited oscillator circuit is simple, oscillation, excitation, power amplification are completed by a tube at the same time, easy to match the load impedance, easy to ignite the plasma, but the frequency stability is slightly poor.
(2) “it excited” type quartz frequency stabilizer generator (crystal controlled oscillation). It is the use of piezoelectric crystal oscillation to adjust the current frequency, so as to keep the frequency constant. The main advantages of this generator are constant oscillation frequency, stable power, high conversion efficiency and strong anti-interference ability. Its structure is more complex than the “self-excited” generator, but its application in ICP commercial instruments is more extensive than the self-excited oscillator.
The oscillator is composed of crystal oscillation, frequency doubling, excitation, power amplification and other parts. It has high frequency stability, but the matching requirement of output impedance is more strict. It is also equipped with impedance matching network and directional coupler for stable output power. Generally, the high frequency generator is required to have stable power output, no electrical interference to the measuring system, high power conversion efficiency and frequency stability as far as possible.
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Packing and delivery
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