Reference design document for an adjustable-output 200 W SEPIC power supply, a 3.26 MB PDF.

Repair guide output for the TF303CL, a 257 KB PDF, with RG meaning repair guide. Documents of this kind usually present board views with highlighted parts, expected…

Huawei Honor 6 reference sheet in PDF form, covering the input and output voltages of the phone's circuits, filed under schematics at 1.24 MB.

PDF reference sheet for the Nokia 3.1 Plus smartphone showing input and output voltages on the board.

Dell Inspiron 15 5567 and 17 5767 schematic for Compal board LA-D801P, revision 1.0. The name spells Compal as Compall and marks the file as an output export.

Schematic in PDF form for the Lenovo IdeaPad 300-15IBR, motherboard NM-A471 at revision 0.4, exported from the LCFC design files.

Samsung Galaxy A12 reference PDF showing input and output voltages, about 2 MB. Voltage charts like this list expected values at regulators, coils and connector pins…

Datasheet-style PDF, 142 KB, for the 74HC595D, the familiar 8-bit serial-in, parallel-out shift register with output latches; the D suffix usually marks the SO package.

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

CD4017 document in PDF form, 81.0 KB, for the CMOS decade counter with ten decoded outputs.

PDF for a Zener 100 W mono amplifier with a quasi-complementary output stage, as indicated by the Spanish word cuasi, 569 KB in size.

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…

PDF schematic of a LiteOn PA-1360-2 adapter, with no output rating given in this file name; a companion document lists it as 12 V 3 A, 36 W.

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

PDF of 310 KB for the APL5930, an Anpec low-dropout linear regulator part; listed as a schematic, it is most likely the manufacturer datasheet.

Schematic in PDF form, 2.03 MB, for a subwoofer identified in the name as e150p. No manufacturer or board revision is stated, so confirm the model label on the enclosure…

Short 44 KB PDF covering the 4N32 and 4N33 optocouplers, two closely related members of the 4N family that use a Darlington phototransistor output for high current…

Spanish-language schematic for a stereo amplifier titled Zener, rated at 1000 W, in a 1.15 MB PDF.

A 171 KB PDF for the 4N39 and 4N40 optocouplers, listed under schematics but in practice a component datasheet.

Family datasheet spanning the 4N29 through 4N33 optocouplers, a 157 KB PDF listed in the schematic category.

Yamaha PA 2400 amplifier schematic in a small 194 KB PDF. The name gives no revision or note about modifications, so it may represent the standard circuit, but confirm…

Circuit diagram for a power adapter labelled DAG-3004, packed in a small 194 KB RAR archive. The name gives no brand or output rating, so check the label on the brick.

Datasheet PDF for the 2SK1058, a 55 KB file. This part number belongs to the 2SK series of N-channel field-effect transistors and is widely known from audio power…

Small 21 KB PDF covering the 4N39 optocoupler, catalogued as a schematic. The name states only the part number, so the content is most likely a brief datasheet with…

Peavey transistor cross-reference sheet in a compact 96.6 KB PDF. Peavey amplifiers often use in-house part numbers on semiconductors, and a cross list like this maps…