Document on building a transmission line loudspeaker enclosure, a 498 KB PDF filed among schematics.

Reference PDF of about 39.2 MB on COF and TAB flying line figures attributed to deybynet, related to an LCD TV repair machine.

Datasheet material for the 2SB1037 transistor, delivered as a 122 KB PDF in the schematic category.

General schematic collection for LED and LCD inverter boards, 1.89 MB in PDF format. The name gives no brand, model or board number, so open it to see which inverter…

PDF document named bl9384, 337 KB, filed as a schematic. The name carries only this code, so the device is not stated; BL-prefixed numbers are common for power…

Samsung SM-A20S schematic section dedicated to the LCD backlight, 4.62 MB PDF. It covers the backlight driver circuit, its boost coil, diode and capacitors, and the…

Creality 4.2.2 mainboard schematic in PDF format, carrying a 28-5-22 date in the name. The 4.2.2 board is common in Creality printers, and the diagram shows how the…

Service schematic in PDF for the KDL-40W700C, a 40-inch LCD TV model, about 17.8 MB. The name carries no board or chassis number, so check the document's index for the…

PDF document of 530 KB whose name refers to lowering the current of a circuit; the title is truncated, so the exact subject is unclear.

Component data for the BC517 NPN Darlington transistor, the name giving ratings of 500 mA and 30 V, catalogued under schematics as a 111 KB PDF.

Backlight circuit document in Spanish, a 741 KB PDF that likely explains or diagrams a display backlight driver stage.

Updated schematic for the IRS D900 class D amplifier, rated from 200 to 500 W and credited to Rat Net, in a 423 KB PDF.

Schematic PDF for Creality mainboard version 4.2.7, with a date code of 28-5-22 in the name.

PDF datasheet of roughly 238 KB describing the 2SD2127 NPN transistor in the Japanese 2SD series. Although labelled as a schematic, it is a single-component reference.

Datasheet PDF, 392 KB, for the 2SK2992. The 2SK prefix belongs to the Japanese JIS registration for N-channel FETs, so despite the schematic category this describes one…

2.1 amplifier schematic using the 2SC5200 and 2SA1943 complementary power transistor pair, in a 184 KB PDF.

PDF named 2SD951, filed as a schematic but in all likelihood the datasheet for this 2SD-series NPN bipolar transistor; at 267 KB it may include scanned pages or extra…

PDF document of 112 KB for the 2SD2280, an NPN bipolar transistor in the Japanese 2SD numbering, filed as a schematic but in practice a datasheet.

Document for the 2SK2493 field-effect transistor in PDF form, 384 KB, listed under schematics in the catalogue.

An 87.4 KB PDF describing the 2SA1839 transistor, indexed with the schematic files. Following JIS numbering, the 2SA designation indicates a PNP bipolar transistor.

PDF schematic titled simply 4kw, most likely a high-power audio amplifier rated around 4 kilowatts.

Schematic PDF of 547 KB for a V4000 related inverter circuit credited to Pappu, likely a companion to the V5000 documents in the same set.

ADM232 document from Analog Devices, a 371 KB PDF for the dual RS-232 driver and receiver with an onboard charge pump.

Datasheet for the 2SD2131 transistor, provided as a 240 KB PDF in the schematic section.

The 2SD1800 transistor is covered by this 79 KB PDF datasheet. Under JIS numbering, 2SD denotes an NPN transistor for low-frequency service, often used in switching…

Transistor datasheet for the 2SC5200 in a 172 KB PDF, listed under schematics but named only by part number.

Compact 42.7 KB PDF covering the 2SB1183 transistor. The JIS-style 2SB prefix identifies a PNP device designed mainly for low-frequency circuits, commonly found in power…

Datasheet for the 2N5195 bipolar transistor, a 120 KB PDF filed under schematics. The name gives no manufacturer or revision.

Datasheet PDF, 137 KB, for the 2SD1841, part of the Japanese 2SD range of NPN bipolar transistors, catalogued here under schematics.

Part documentation for the 2SD1876 in PDF form, 89.6 KB, categorised under schematics. Only the part number is given in the name.

The 2SJ312 is documented in this 362 KB PDF, catalogued as a schematic. Beyond the part number the name says nothing about the equipment involved.

Part documentation for the 2SC4727 in a 108 KB PDF. Catalogued under schematics, the file is named for a component whose 2SC prefix marks an NPN bipolar transistor in…