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12V Relay on 6V power supply – Circuit Schematic
12V Relay on 6V power supply
This circuit allows a 12v relay to operate on a 6v or 9v supply. Most 12v relays need about 12v to "pull-in" but will "hold" on about 6v. The 220u charges via t...
2500W Phase Control with TLE3103 – Circuit Schematic
2500W Phase Control with TLE3103
This circuit controls resistive and inductive loads up to 2,500W. Its main functional device is an integrated phase control circuit - Siemens TLE3103. It contai...
Toggle Switch with relay – Circuit Schematic
Toggle Switch with relay
Pushing the button once will energize the relay. Pushing the same button a second time will de-energize the relay. Any simple momentary action push-to-make swit...
Latch Switch – Circuit Schematic
Latch Switch
In this circuit a non-locking push switch is used to activate a load. The load remains switched on until power is removed from the circuit. The load is represen...
AC triggered switch – Circuit Schematic
AC triggered switch
An AC triggered switch for low frequency signals. This is a basic ac voltage operated switch made from discrete components. Both Q1 and Q2 work as common emitte...
Advanced Power Switcher – Circuit Schematic
Advanced Power Switcher
If you`re an effects builder or repairer, you know by now that it`s a good idea to protect the circuitry in the effect from the consequences of a reversed batte...
Soft ON/OFF switch circuit – Circuit Schematic
Soft ON/OFF switch circuit
When the "ON/OFF" button is pressed once, the equipment goes on and stays on. It goes off when the button is pressed again. The circuit is straight forward. It ...
High Voltage Switching for Energy Recovery – Circuit Schematic
High Voltage Switching for Energy Recovery
This is a High Voltage switching device for driving coils and which have big impedance when it is switched off. It can be use in Back-EMF energy recovery tests,...
High Voltage Switching for Energy Recovery – Circuit Schematic
High Voltage Switching for Energy Recovery
This is a High Voltage switching device for driving coils and which have big impedance when it is switched off. It can be use in Back-EMF energy recovery tests,...
Negative Voltage Load Swtich – Circuit Schematic
Negative Voltage Load Swtich
The idea is simply to turn off the negative voltage load. Some examples:- - Bias votlages for LCD panels - RF Amplifiers - Audio Amplifiers The good thing...
Negative Voltage Load Swtich – Circuit Schematic
Negative Voltage Load Swtich
The idea is simply to turn off the negative voltage load. Some examples:- - Bias votlages for LCD panels - RF Amplifiers - Audio Amplifiers The good thing...
Touch Switch circuit – Circuit Schematic
Touch Switch circuit
A touch switch is a switch that is turned on and off by touching a wire contact, instead of flicking a lever like a regular switch. Touch switches have no mecha...
Touch Switch circuit – Circuit Schematic
Touch Switch circuit
A touch switch is a switch that is turned on and off by touching a wire contact, instead of flicking a lever like a regular switch. Touch switches have no mecha...
Photo Light with Relay – Circuit Schematic
Photo Light with Relay
The circuit below uses a CMOS dual D flip flop (CD4013) to toggle a relay or other load with a momentary push button. Several push buttons can be wired in paral...
Photo Light with Relay – Circuit Schematic
Photo Light with Relay
The circuit below uses a CMOS dual D flip flop (CD4013) to toggle a relay or other load with a momentary push button. Several push buttons can be wired in paral...
Camera Switcher – Circuit Schematic
Camera Switcher
This circuit can be used for multiple cameras with one monitor. The circuit can be operated manually or automatically....
Camera Switcher – Circuit Schematic
Camera Switcher
This circuit can be used for multiple cameras with one monitor. The circuit can be operated manually or automatically....
Oscillating output improves system security – Circuit Schematic
Oscillating output improves system security
Many electronic-control systems have digital outputs that use transistors. One method of improving the security in these outputs is to use an oscillating signal...
Oscillating output improves system security – Circuit Schematic
Oscillating output improves system security
Many electronic-control systems have digital outputs that use transistors. One method of improving the security in these outputs is to use an oscillating signal...
Current Sensing Slave Power Switch – Circuit Schematic
Current Sensing Slave Power Switch
Switch on one unit, and everything else you need turns on automatically. This can save the tedium of turning on half a dozen different things, when one should ...