Regulated power supply for a preamplifier, drawn in a 601 KB PDF schematic with a source tag in the name.

Boardview for the HP ProBook 450 G4, Quanta project X83, board DA0X83MB6H0, in a 146 KB RAR.

A PDF collection of fun basic electronic projects, filed under schematics and 406 KB in size.

RAR archive of about 838 KB labelled with the Compal board number LA-7251P, with no revision and no indication of contents in the name.

Programming specification from Microchip describing how to program the flash and data EEPROM memory of PIC16F87X microcontrollers, supplied as a 201 KB PDF.

Spanish repair training document titled learning to repair, a 4.09 MB PDF and a different file from the similarly named from-scratch course.

Second chapter of a Spanish course introducing cellular phones and their technology, saved as a 503 KB PDF.

Quanta ZG5 schematic as a 1.03 MB PDF, with no revision in the file name; its size matches the rev 1A copy, but identical content cannot be confirmed from the name.

BIOS dump for board 15277-1 with the code LV115SK in the name, marked fully working and supplied as a 4.06 MB RAR archive.

Boardview for a motherboard numbered 18717-1, a five-digit pattern used by Wistron, the ODM building laptops for several brands.

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

PCB document for an R2 power amplifier listed at 1000 watts, as a 3.50 MB PDF. The larger size suggests detailed artwork, possibly with both layers or component…

Document named f970, attributed by name to its author yahya, provided as a 3.14 MB PDF.

Simple preamplifier schematic built around the NE5532 dual low-noise op-amp, a 405 KB PDF; the extra tag in the name only marks the source site.

Schematic PDF for a Philips 32PFL3xxx television on the TP.VST59S.P89 chassis, 3.33 MB, with T3 in the name indicating a variant.

RAR archive of roughly 1.29 MB containing Intel ME System Tools for Management Engine version 3, revision r2 of the package.

Intel MCC platform firmware module, version 154.1.10.1021, LP variant, stepping B, production signed, 152 KB.

Version 10.227.203.1143 of an Intel LKF S firmware component, production build, 44 KB, one step older than 1144 in the same line.

Oldest ICP N firmware component in this group, version 9.0.0.0009, production build, only 8 KB compared with 16 KB for the 9.0.1 releases.

PDF schematic for Compal board LA-4182P, project ALC0, revision 2.0, packed as RAR. Compal is the ODM behind the LA-xxxxP numbering, building boards for several laptop…

Romanian-labelled schematic of a preamplifier with tone corrector, meaning a bass and treble tone control section, provided as a 330 KB PDF.

PDF circuit diagram of a mono tone control stage built around two transistors, as the name indicates.

Pegatron schematic for a board code-named Viper2, with the reference P7RCR in the file name.

Schematic for the board code-named MIHAWK, Wistron board number 15208-3 with the further code 06J01, as a 4.84 MB PDF.

Schematic for the Acer Aspire 3 A315-22 notebook, whose mainboard is the Huaqin design NB8607, compressed into a 1.80 MB rar.

Firmware archive for a Lenovo board NM-D341, tagged HYG60HX4B0, stored as a 9.75 MB RAR and marked as the first of two similarly named copies.

Unlocked BIOS archive for the Dell Latitude 7320 Detachable on Compal board LA-K241P. The LA-xxxxP pattern marks Compal as the ODM building this tablet board.

Intel CSME System Tools package, version 19.0.0.1854, in a 15.2 MB ZIP. These utilities, such as the Flash Image Tool and FPT, are used to work with the Management…

Wistron schematic for board number 19817-1, archived in a 5.96 MB RAR with the PDF inside.

Archive for a Dell motherboard numbered 19752-1, 149 KB in size, whose name gives no further detail on its contents.

Final PCB artwork for an amplifier using Sanken output transistors, labelled 7 set, which likely indicates seven pairs of output devices, delivered as a large 7.42 MB…

Updated release of the Matrix II t13 x73-1 amplifier document, marked new, in a 1.69 MB PDF.

Firmware archive for a Philips 190CW monitor, tied to main board 715G2653-1 according to the name.

BIOS image for a Quanta UM2 notebook board in its UMA version, which uses integrated graphics only, supplied as a 566 KB RAR.

Production firmware component for the Intel ICP N chipset variant, version 9.0.1.0004, 16 KB.

Boardview in CAD format for a Huaqin-designed board labelled Labatt JL NB2950, revision V3, packed in a small RAR.

Schematic in PDF for the HP EliteBook 840 G3 laptop, board 6050A2892401-MB-A01, packed in a 1.25 MB RAR archive.

Windows executable of 4.82 MB described as the original Dell PFS Extract tool. Dell BIOS updates are packaged in the PFS format, and an extractor of this type unpacks…

Small ZIP archive of 16.7 KB described as a PCHC firmware repository. PCHC firmware is an Intel chipset component stored inside the system SPI image alongside the ME…

HP ProBook 4440s BIOS dump for the Rocky Intel MB design, board 11243 with the SB suffix, archived as a 3.70 MB RAR.