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zener Flyback diodes issues and pull-in & hold current issues in this Relay circuit – Circuit Schematic
zener Flyback diodes issues and pull-in & hold current issues in this Relay circuit
Although this may be a basic question but I`m still struggling with it. In this schematic, two zener diodes D1 and D2 are connected back-to back across relay co...
switches Using a momentary push button as a latching on-off toggle switch – Circuit Schematic
switches Using a momentary push button as a latching on-off toggle switch
An explanation of how the thing should work. The TPS_EN line is low at first. Since it is pulled down by a 10k pull down resistor(not shown in the schematic). W...
triac Optotriac doesnt turn off – Circuit Schematic
triac Optotriac doesnt turn off
No problems turning it on, but after I unload the input (no input current), the triac doesn`t turn off. The load is standard RS-232 voltages (+/- 12V), speed 56...
equivalent circuit of a solid state relay – Circuit Schematic
equivalent circuit of a solid state relay
Switch 50V AC voltage. Maximum drained current will be 5A. Frequency is 50Hz. Switching speed is not important, can be real slow, it is not a problem in my appl...
Relay Switching Circuits – Circuit Schematic
Relay Switching Circuits
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Drive A Relay Using A 1-Wire Addressable Switch – Circuit Schematic
Drive A Relay Using A 1-Wire Addressable Switch
The 1-Wire Net, or MicroLAN (by Maxim-Dallas), is a simple way to connect slow devices (such as sensors, relay drivers, switches, and so on) using simple compon...
Control Circuits – Circuit Schematic
Control Circuits
This low current relay circuit is designed to be used in battery operated electronic devices. Its operating current is in micro amperes ( µA). This is done by ...
The anti exciting type switching power supply based on FSDM0565R is designed – Circuit Schematic
The anti exciting type switching power supply based on FSDM0565R is designed
At present, the switching power supply is with its high performance, high efficiency 75%, the switching power supply efficiency of the single scale integration ...
Structural analysis of switching power supply – Circuit Schematic
Structural analysis of switching power supply
Daily switching power supply, mainly offer the direct current power supply for electronic device and supply power. The required direct-current volts of the elec...
Improve the response characteristic of USB 2.0 switching system – Circuit Schematic
Improve the response characteristic of USB 2.0 switching system
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Design and simulation study of anti exciting type switching power supply of single-end – Circuit Schematic
Design and simulation study of anti exciting type switching power supply of single-end
Because switching power supply energy-conservation also brings the huge economic benefits, cause the attention of the various circles of society to be populariz...
bypass which improves the ability to resist surging of relay contact – Circuit Schematic
bypass which improves the ability to resist surging of relay contact
Generally, during power up of the apparatus, the capacitor is the main reason that surge current emerges, the synoptic diagram of the principle is shown in Fig....
A 12 Volt Switching Power Supply – Circuit Schematic
A 12 Volt Switching Power Supply
About this Circuit This is a good Circuit for those persons needing to Boost or drop a voltage. The Output is High Frequency, but can be Rectified and Filtered ...
Solid State Relay Required Only 50uA Drive Current – Circuit Schematic
Solid State Relay Required Only 50uA Drive Current
This circuit demands a control current that is 100 times smaller than that needed by a typical optically isolated solid state relays. It is ideal for battery-po...
How to Make a 25 Amp 1500 watts Heater Controller Circuit – Circuit Schematic
How to Make a 25 Amp 1500 watts Heater Controller Circuit
Controlling heaters rated as high as 1500 watt requires stringent specifications with the controlling unit for safe and effective implementation of the intended...
220V Touch Switch circuit diagram – Circuit Schematic
220V Touch Switch circuit diagram
This circuit is connected directly to a 220V home electrical installations. LOAD  on the schematic diagram above, is an electronic device with 220V AC current...
12V 50W Switching Regulator by UC3844N – Circuit Schematic
12V 50W Switching Regulator by UC3844N
This is a simple low-cost 50W off-line switching power supply, which can be used for home projects or to learn operation of flyback converters. It can work over...
Zero-Crossing-Triac-Driver-Optocoupler-MOC3041 – Circuit Schematic
Zero-Crossing-Triac-Driver-Optocoupler-MOC3041
The MOC303XM and MOC304XM devices consist of a AlGaAs infrared emitting diode optically coupled to a monolithic silicon detector performing the function of a ze...
Using Solid State Switches Instead of Mechanical Relays – Circuit Schematic
Using Solid State Switches Instead of Mechanical Relays
Mechanical 12 Volt DC automotive relays are used throughout the car audio industry to turn on amplifiers, lock doors, roll ‘up windows, etc. However, there is...
MOSFET Driver circuits – Circuit Schematic
MOSFET Driver circuits
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