• Home
  • Articles
  • Circuit Bench
  • Mini Projects
  • Bookstore
  • Q&A
  • Newest Component
Articles
Title
Intermittent fault (Q061E)
Conductive Sponge (Q062E)
Testing ICs (Q063E)
Protected Outlets (Q064E)
IC Suffix (Q065E)
Magnets and Analog Multimeters (Q066E)
Current in switches and outlets (Q067E)
9V Battery in Place of 6 Cells (Q068E)
Large Batteries x Small Batteries (Q069E)
Equivalence of Integrated Circuits (Q070E)
No Reach Wireless Remote Control (Q071E)
Difference between Black and Ultraviolet Light (Q072E)
Equivalence of Integrated Circuits (Q073E)
Stand-By Consumption (Q074E )
Batteries of Different Types on the Same Device (Q075E)
Reducing Voltages Without Transformer (Q076E)
Printed Circuit Board Protection (Q077E)
Voltage of Capacitors in AC Circuits (Q078E)
Two Diodes as a Transistor (Q079E)
High Power Tweeter (Q080E)
Tubes pinout (Q081E)
Transformer Heating (Q082E)
Batteries Charging Time (Q083E)
Germanium Transistors (Q084E)
Matched Transistors (Q085E)
Parallel Transistors (Q086E)
Twisted Pair Wire To Connect Speakers (Q087E)
Common Discrete x SMD (Q088E)
Transformers For Tubes (Q090E)
PNP or NPN - Which is the faster? (Q091E)
Relay Contact Association (Q092E)
Direct Drive on Drive Wheel (Q093E)
AM and Shortwave Antenna (Q094E)
Yellow or White Light (Q095E)
Paper and Oil Capacitors (Q096E)
Silver Spot on Tubes - Getter (Q097E)
Dual and Triple Electrolytic (Q098E)
Electric Charge on Cell Phone (Q298E)
Tube Heating (Q099E)
TIP31A, B or C (Q100E)
EL84 x 6BQ5 (Q101E)
Neon Lamp Consumption (Q102E)
Buying Batteries Correctly (Q103E)
Parallel Resistors - Heating (Q104E)
Series Resistors - Heating (Q105E)
Removing Acoustic Feedback (Q106E)
Higher Gain Transistor (Q107E)
Old Tubes (Q108E)
Turning Off SCRs (Q109E)
Weak tubes (Q110E)

Page 2 of 8

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8

  

Latest

  • Stepped Timer (ART726E)
  • Electronic Circuit Breaker (ART727E)
  • Electronic Cockroach Killer (ART649E)
  • Two Projects with Ceramic Transducers (ART647E)

Circuit Bench

  • 28 V Comparator Exciting Lamp (CB14071E)

      The circuit shown is from a 1994 National Semiconductor technical documentation. The circuit can...

  • Photo relay (CB22295E)

      Found in an American book from the 1960s, this circuit uses a photoelectric cell of the time as a...

  • Magnetic Pick Up Preamplifier (CB13881E)

      This circuit was found in an American documentation from 1976. We can assemble it with two 741,...

Buscador de Datasheets



N° de Componente 

Institute Newton C. Braga - 2015 - 2025 ©