5 pole relay schematic | Next Electronics

Here are some circuit diagrams for driving relays from a microcontroller. Ensure the use of a 5-volt relay (this refers to the coil, not the load circuit) and verify that the relay has a sufficient rating for the load being...

The Car Relay Charger

This document explains the adaptation of a standard 40 amp car relay, converting it from a "normally open" contact configuration to a "normally closed" contact configuration. While it is possible to perform this modification, automotive relays with "normally closed" contacts...

Dark and Light Activated Relay

The potentiometer adjusts the trigger level. The diode in the circuit diagram is specified as 1N914, which is suitable for light-duty relays; however, since the 1N914 is a signal diode, it is not ideal. A 1N4001 or a better alternative...

Jacobs Ladder

Construct this engaging Jacob's Ladder to observe electric arcs ascending the ladder and dissipating into the atmosphere. It operates using a sophisticated 12,000-volt power supply. The author, Robert Iannini, notes that electric arcs have long captivated and intimidated people, manifesting...

Time relay three-start circuit

The circuit depicted in Figure 3-159 employs complementary operation three times along with three relay contacts. This is followed by the automatic elimination of the rotor circuit resistance levels, ultimately reducing the rotor winding variable resistor to zero (fully shorted),...

Controlling a relay with a digital logic level circuit

The schematic below illustrates four methods of controlling a relay with a digital logic signal. Figure A can be used in most cases where the relay coil requires 100 mA or less and the input current is 2 milliamps or...

Relay Coil Energy Saver

Some relays will become warm if they remain energized for some time. The circuit shown here will actuate the relay as before but then reduce the hold current. The described circuit addresses the issue of heat generation in relays due to...

Light circuit diagram: 0-300V Variable High Voltage Power Supply

This is a variable high voltage DC power supply circuit that allows for customization of the output voltage ranging from 0 to 311V DC. It includes a current limit protection feature set at approximately 100 mA. The power MOSFET Q1...

Direct High Voltage DC Regulator

This regulator circuit stabilizes the output voltage at 200V directly (without a transformer). Although the output voltage is high, this circuit only suffers a. The circuit in question is designed to maintain a stable output voltage of 200V without the use...