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Multi-position mains switch circuit – Circuit Schematic
Multi-position mains switch circuit
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Solid State Relay – Circuit Schematic
Solid State Relay
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8 Channel LPT Relay Circuit – Circuit Schematic
8 Channel LPT Relay Circuit
This circuit is using Power Battery Terminal (PBT) for easy relay output and aux power connection. The LED on each channel indicates relay status. Berg pins for...
Pulsing Relay – Circuit Schematic
Pulsing Relay
Hi Parallax people, just joined the forum. I`m trying to control a CPU fan with a relay triggered by a stretch sensor. I have my circuit set up like this. Right...
Bosch 75 amp relay wiring diagram – Circuit Schematic
Bosch 75 amp relay wiring diagram
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relay circuit – Circuit Schematic
relay circuit
The intended result is that the relay oscillates and the LEDs flash when the button is pressed, however when I press the button the leftmost LED lights constant...
Triac low output problem – Circuit Schematic
Triac low output problem
The circuit is two separate 3023 optoisolators driving two separate triacs, each one powering a large 3-phase contactor. One contactor is engaging fine. The oth...
Power Flip Flop Using A Triac – Circuit Schematic
Power Flip Flop Using A Triac
This approach can be demonstrated using the rather unusual semiconductor power flip-flop described here. A flip-flop is a toggling circuit with two stable switc...
Short Circuit Protection With A MOSFET – Circuit Schematic
Short Circuit Protection With A MOSFET
If you have an application in which a MOSFET is already used to switch a load, it is relatively easy to add short-circuit or overload protection. Here we make u...
Trip Circuit of a Circuit Breaker – Circuit Schematic
Trip Circuit of a Circuit Breaker
Consider a simplified circuit of a typical relay as shown in the Fig. 1 usually the relay circuit is a three phase circuit and the contact circuit of relays is ...
Mosfet Heating Circuits – Circuit Schematic
Mosfet Heating Circuits
This Open Source thread is for the advancement of a ""Mosfet Heating Circuit"" one that is a modified replication of one.....
120VAC 10Amp DPDT Relay question aquarium design dpdt relay – Circuit Schematic
120VAC 10Amp DPDT Relay question aquarium design dpdt relay
aquarium design, dpdt relay, 12v inverter: ONE: The relay you have selected is rated plenty sufficient for a 400 watt load. TWO: The 12v dc relay, transformer a...
Mains Pulser Circuit – Circuit Schematic
Mains Pulser Circuit
The pulser is intended to switch the mains voltage on and off at intervals between just under a second and up to 10 minutes. This is useful, for instance, when ...
30 MHz switch circuit – Circuit Schematic
30 MHz switch circuit
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zener Floating Voltage to Bias a P-Channel Mosfet without Exceeding Source-Gate Max Voltage – Circuit Schematic
zener Floating Voltage to Bias a P-Channel Mosfet without Exceeding Source-Gate Max Voltage
The premise of the circuit is this: I want to power L1 coil with square pulses. You can see I`ve got a freewheeling diode to handle the back emf field collapse ...
DC Fan Control (Switching on/off) – Circuit Schematic
DC Fan Control (Switching on/off)
Using an MC25060V2 fan, and I`d like to switch it on and off through software occasionally (i. e. not PWM or anything fancy like that). My thought is to either ...
switches Default-on latch-off MOSFET power switch – Circuit Schematic
switches Default-on latch-off MOSFET power switch
It should default on when first connected, but if a particular signal goes high for a small amount of time (say, 10 microseconds, ) then it should turn off, and...
switches MOSFET as a switch – Circuit Schematic
switches MOSFET as a switch
The transistor shown is a P-channel MOSFET acting as a "high-side switch". More commonly, an N-channel MOSFET low-side switch is used, but what you have will wo...
mosfet How to switch between a solar panel and battery – Circuit Schematic
mosfet How to switch between a solar panel and battery
A 12v battery is being charged from a solar panel. When battery is 12v solar panel is disconnected from battery and connect the load with battery. And again sol...
speedcontroller TRIAC switching problem – Circuit Schematic
speedcontroller TRIAC switching problem
You already appear to have sufficient snubberring around the TRIAC which should eliminate DV/DT based switching (the TRIAC turning itself on due to noise on the...