Power Transformer Market: Quantitative Market Analysis, Current and Future Trends, 2018–2028 | Inductor Color Codes

Method and system for uplink HARQ and CSI multiplexing for carrier aggregation Patent No. 10178651 

This is another one that’s not really “on” until 4.5 V or so. It’ll work great for small currents, but it’ll get really hot and kill your battery life at 3.3 V.

sure, why not. What should be better? The semiconductors in plastic packages are your least concern in this case. Anything what has a void in it (metal package) will crush and any wet capacitor would get oil into it’s electrolyte. At least this was the idea at 1/3 of this pressure, but anything what stops working here will not magically start again at higher pressures

6,3A max, will heat it 107 degrees above ambient, so at 25 degrees Celsius ambient you’ll burn you fingers but not the FET. Best keep it well below 5A and give it a big copper plane when switching large currents.

I took a 250W PFC demo board, ST-EVL6563S-250W (AN3119 from STMicroelectronics). Its input filter does not contain a DM inductor so I inserted one (#WE-7447709101, 100uH 12mm, 12mm, 10mm) between C4 and L2-3.  A common-mode inductor primary (#ACM7060-301 7.0mm x 6.0mm) was inserted between the new 100uH inductor and L2-3. This CM inductor was used as a 1:1 transformer.  The secondary was completed with a 330nF cap to ground. The input AC current was completed through a LISN and monitored as shown in the pics. I removed C1- 470nF first, then C2-1.0uF then reduced C4- 1.5uF to 330nF. With each cap removal or reduction, the circulating noise current increased, reducing the input noise current. The circulating noise current was 40dB greater than the input noise current. The power factor improved to 0.9997. The steering transformer/inductor had little heat rise. This unit is rated 264 Vac and 60 Hz. The total X cap value was 3.0uF which at 60 HZ = 883 Ohms. At 265Vac, that is 0.30Arms of reactive current and 80 W of reactive power. This configuration would also be helpful in an avionics environment where the power form is of 400 Hz to 800 Hz operation.

The raw material for inductors is copper because it is the ideal for induction heat treatment in metal parts.

Inventor(s): Michael Linley Fripp (Carrollton, TX), Zachary William Walton (Carrollton, TX) Assignee(s): Halliburton Energy Services, Inc. (Houston, TX) Law Firm: McGuireWoods LLP (Local + 9 other metros) Application No., Date, Speed: 14781936 on 06/30/2015 (1288 days app to issue)

The problem is when you get a small number, it often comes back in scientific notation. Suppose you didn’t know that Wolfram has all the reactance calculators built-in. You know an inductor has a reactance of 2*pi*f*L, and you want to know what inductor would have a reactance of 100 Ω at 122 MHz.

Inventor(s): Ida T Mai-Krist (White Lake, MI) Assignee(s): Toyota Motor Engineering Manufacturing North America, Inc. (Plano, TX) Law Firm: Dinsmore Shohl LLP (14 non-local offices) Application No., Date, Speed: 15177913 on 06/09/2016 (943 days app to issue)

Inventor(s): Eeshan Miglani (Chhindwara (M.P.), IN), Jagannathan Venkataraman (Bangalore, IN) Assignee(s): TEXAS INSTRUMENTS INCORPORATED (Dallas, TX) Law Firm: No Counsel Application No., Date, Speed: 15927157 on 03/21/2018 (293 days app to issue)

Abstract: A system and method of navigating an automated telephone answering system (TAS) may include recording incoming and outgoing portions of a call with the TAS, separating the recording into a series of prompt-response segments, customizing at least one response, and storing the segments as a script for use in subsequent calls to the TAS.

Pides mucho, deberias tener mas nociones de electrónica o seguir algun tutorial al pie de la letra, pero si te interesa esas cosas o bien las compras hechas, las manda a hacer a alguien que sepa o estudias por tu cuenta, todo cuesta esfuerzo.