Boards using the BD140

73 boards

Boards in 54 GitHub repositories, designed in KiCad, that use the BD140 by STMicroelectronics (-65℃~+150℃ 1 PNP 1.25W 1.5A 100nA 500mV 5V 63 80V PNP TO-126 Bipolar (BJT) ROHS). See how each wires it, with its parts, size, README and files; the BD140’s symbol, footprint and pinout are on its own page.

4 layers150 × 100 mm
Ultimate LPS
BTTLab/simple_and_affordable_lps
Simple and affordable power supply
97 parts27MIT
2 layers236.8 × 169.8 mm
TK2000
clemarfolly/Microdigital-TK2000
Reprodução da PCB do TK-2000 da Microdigital, clone do Micro-Professor MPF-II
212 parts17
2 layers100 × 80 mm
Rti
cceh/rti
Reflectance Transformation Imaging
58 parts15
2 layers100 × 100 mm
Amply
T76-org/amply
A $10 desktop Bluetooth amplifier you'll love
67 parts14GPL-3.0
2 layers84.5 × 82.6 mm
Classab amp
prydin/classab-amp-mosfet
MOSFET-based 50W Class AB amplifier
67 parts9
2 layers40 × 99 mm
Output mixer
mohoyt/output_mixer
Simple 4 channel Eurorack output mixer
114 parts7CERN-OHL-S-2.0
2 layers135.8 × 56.1 mm
Power board
xtarke/automated_buggy
This shield connects microcontroller (MSP-EXP430FR2355) pins to the car's power board. Go to Power Board for more hardware information.
87 parts5GPL-3.0
2 layers101.3 × 102.4 mm
Opamp front
prydin/opamp-frontend-class-ab
The result is a fast amplifier (>80V/us slew rate) with low distortion (0.00045% meadured @ 1kHz/1W/8ohm resistive load). It's undergone some preliminary measurements and looks quite promising.
93 parts4
2 layers120.1 × 120 mm
Mono amplifier
dario0603/AB-class-amplifier
Design and simulation of a Class-AB audio power amplifier, focusing on output-stage linearity, crossover distortion reduction, and overcurrent protection.
97 parts1
2 layers77.5 × 50.8 mm
Protection board
Markus-Fitz/Protection-board
Speaker-protection board for power amplifier.
71 parts1GPL-3.0
4 layers150.3 × 132.3 mm
MRIAMP
msayad97/Amplifier

235 parts1
2 layers111.1 × 44.5 mm
1KVA Power Supply
Ogbonna-Joseph/1KVA-SINE-WAVE-POWER-INVERTER
This is a design of a sine wave power inverter, which can be used in your homes and offices.
33 parts1
2 layers113.5 × 152.5 mm
Classab amp
prydin/bog_on_a_plate

93 parts1
2 layers76.5 × 66.3 mm
Diamond
prydin/diamond-buffer-amp
A simple diamond buffer amplifier
40 parts1
2 layers130 × 100 mm
RE3RT4Prog
afiglee/RE3RT4Prog
Programmer for 556RT4 and 155RE3
69 parts
2 layers211.2 × 87.8 mm
Original
Ajay-Mallesh/PCB-Designs
Collection of PCB designs -> Basic circuits
71 parts
2 layers68 × 87.5 mm
211201062 Faz4 KiCad
alpnak/Analog_Common_Emitter_Amplifier
4-Stage analog common emitter amplifier design and analysis with LTspice & KiCad
46 parts
2 layers116.5 × 47.5 mm
Proj3 potencia
Edson8101/EA801---Turma-D
Este repositório apresenta os projetos desenvolvidos pelos estudantes da FEEC-UNICAMP na disciplina de graduação denominada Laboratório de Sistemas Embarcados.
27 partsMIT
2 layers85 × 107 mm
Poweramp
electrucio/ltspice_pcb_viewer
Umbrella project for visualizing and cross-exploring electronics designs (LTspice / KiCad schematics and PCBs). The project is composed of independent modules under modules/ that will be integrated into a single…
47 parts
2 layers118.7 × 66 mm
Vacuum gauge
gbochev/vacuum-gauge
Simple Arduino-based vacuum gauge for Pirani and Thermocouple sensor types
36 partsGPL-3.0
2 layers90.9 × 174.8 mm
La3600 equalizer amp
jovan3/la3600_equalizer_amp

74 parts
2 layers70.1 × 43.9 mm
Ne5532 headphones amp
jovan3/ne5532_headphones_amp
NE5532-based headphones amp with BD140/BD139 pair as output stage
36 parts
2 layers80 × 60 mm
Sender
jsteiner4000/Kabelsuchger-t
Ein Gerät mit dem Kabel bzw einzelne Adern ausfindig machen kann.
53 parts
2 layers155.2 × 155.2 mm
Stereo panel
lahirunirmalx/discrete-stereo-amp
Hobby stereo class-AB amplifier (BC547/BD139/BD140), discrete 12 V supply and volume board: simulated, generated KiCad boards, docs. CC BY-NC-SA 4.0
401 parts