LM317 CONSTANT CURRENT ONLINE CALCULATOR AND CIRCUIT

 

You can use this LM317 online calculator and circuit for design constant current source (electronic load ).

POST: https://www.electronicecircuits.com/electronic-circuits/lm317-constant-current-calculator/

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ICL7107 PANEL METER

This is a 3½ digit panel meter circuit using ICl7107 IC. Its voltage  range is 20V. But you can change it to 200mV, 2V, 20V and 200V.

POST: http://www.electronicecircuits.com/electronic-circuits/icl7107-panel-meter

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Precision 1Hz clock generator circuit

This is 1 Hertz clock generator circuit using 32.768Khz crystal, CD4060 and CD4013 ICs. Our circuit base on crystal oscillator. So we can get very accurate and stable output. That can use for clock, timers and many projects.

POST:http://www.electronicecircuits.com/electronic-circuits/precision-1hz-clock-generator-circuit

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Toggle to Momentary Switch Using 555 Monostable

This is a toggle switch to momentary (latch to push button)  switch converter. Most of the time we need momentary to toggle switch. But sometime we need to convert some latch signal to momentary signal. This circuit base on 555 timer IC and it uses monostable mode.

POST: http://www.electronicecircuits.com/electronic-circuits/toggle-to-momentary-switch-using-555-monostable

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Accurate 1 kHz Square Wave Crystal Oscillator Circuit

Accurate 1 kilohertz square wave frequency generator schematic

This is a simple, accurate 1 kHz square wave crystal oscillator circuit using frequency divider IC and crystal.

• POST: http://www.electronicecircuits.com/electronic-circuits/accurate-1-khz-square-wave-crystal-oscillator-circuit
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DIY simple low voltage dual power amplifier circuit TDA2822M

This is a simple low voltage stereo power amplifier circuit using single 8 pins IC. You can easily operate it using two battery cell. TDA2822M IC work within 1.8V to 15V. This can use for many applications like small battery powered radio, alarm, portable cassette player, headphone amplifier and more.

POST: http://www.electronicecircuits.com/electronic-circuits/3v-battery-powered-stereo-amplifier-circuit-tda2822m

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7805 5V 1A Regulated Power Supply with Overvoltage Protection Circuit

This is the 7805 5 volts 1 ampere Regulator with Overvoltage Protection Circuit. Most of the COMS, microcontrollers and TTL ICs require a well regulated power supply.

POST: http://www.electronicecircuits.com/electronic-circuits/7805-5v-1a-regulated-power-supply-with-overvoltage-protection-circuit

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AC Neon lamp filament or semiconductor blown fuse indicator circuit

AC Neon lamp filament or semiconductor blown fuse indicator circuit

This simple circuit tells you have a blown fuse without removing the fuse from its holder or semiconductor fuse status. This neon lamp fuse indicator circuit makes neon lamp flash up if a fuse blows or open.

POST: http://www.electronicecircuits.com/electronic-circuits/ac-neon-lamp-filament-or-semiconductor-blown-fuse-indicator

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Digital Logic Circuit Designing Simulating Software

LogicCircuit – is free, open source educational software for designing and simulating digital logic circuits.

POST: http://www.electronicecircuits.com/electronic-software/digital-logic-circuit-designing-simulating-software

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Automatic Gain Control PreAmplifier Circuit Diagram

The preamp circuit uses an easily obtained 741 op amp set for an internal gain about 200.

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4017 LED Knight Rider Circuit Diagram

4017 LED Knight Rider Running Light Circuit Diagram

In this  4017 Knight Rider circuit, the 555 is wired as an oscillator. It can be adjusted to give the desired speed for the display. The output of the 555 is directly connected to the input of a Johnson Counter (CD 4017).

POST: http://www.electronicecircuits.com/electronic-circuits/4017-led-knight-rider-circuit-diagram

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Momentary push button soft latching toggle on off switch circuit

Momentary push button soft latching toggle on off switch circuit

This is a momentary push button switch circuit for toggling electronic devices ON and OFF. When you push once this circuit set to ON and push again circuit set to OFF.

POST: http://www.electronicecircuits.com/electronic-circuits/momentary-push-button-soft-latching-toggle-on-off-switch-circuit

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Inductor Design Software

Inductor Design Software

You can easily design inductors using this application. We can enter micro Henry, Ohms, Amperes, Core shape, Winding type, Frequency, Voltage, temperature and more settings.

POST: http://www.electronicecircuits.com/electronic-software/inductor-design-software

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large vintage vacuum tube, big valve tube by electronicecircuits.com electronic circuits

large vintage vacuum tube, big valve tube by electronicecircuits.com electronic circuits

large vintage vacuum tube ( big valve tube ) by electronicecircuits.com. I get this from my Father ( S. N. Palitha Dayarathna. (4S7ND)) Anyone Know about this valve tube ?

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50Hz 60Hz Frequency Generator Circuit Using Crystal Oscillator

50Hz 60Hz Frequency Generator Circuit Using Crystal Oscillator

 

 

You can generate 50Hz or 60Hz using this frequency generator. This oscillator can be used as the front end of circuits that require precision pulses.
A crystal is used in the circuit to generate clock pulses. The circuit uses two counter ICs CD4060 and 7490 to divide the basic frequency to generate 50Hz or 60Hz pulses.

 http://www.electronicecircuits.com/electronic-circuits/50hz-60hz-frequency-generator-circuit-using-crystal-oscillator

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DC Motor Clockwise Anticlockwise Control H-bridge Circuit

DC Motor Clockwise Anticlockwise Control H-bridge Circuit

Bi-direction Control Circuit For DC Motor

This circuit can control direction of a DC motor.  In many applications we need to operate the motor in both directions Clockwise and Anticlockwise (forward and back). One way of achieving this is to connect the motor into a Transistor H-bridge circuit arrangement. H bridge is an electronic circuit that enables a voltage to be applied across a load in either direction. These circuits are often used in robotics and other applications to allow DC motors to run forwards and backwards (Bi-directional).

more: http://www.electronicecircuits.com/electronic-circuits/dc-motor-clockwise-anticlockwise-control-h-bridge-circuit

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