Switches and relays circuit diagrams
This circuit uses a single op-amp and the output is triggered by two different voltage levels.
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This is a 10 way electronic latching switch using just two push-to-make switches. Each output can be latched on and off independently.
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Special design for shop-windows animation. Useful for many types of touch controls
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This circuit will remove the transient spikes and contact bounces from a non-latching push button switch.
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This circuit uses a Silcon Controlled Rectifier (SCR) as a latch switch. Once enabled it can only be turned off by pressing S2 or power is removed from the circuit.
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This circuit can be used for multiple cameras with one monitor. The circuit can be operated manually or automatically.
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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.
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In this circuit the 555 timer is used in a novel way, as a voltage controlled switch.
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The IC is a quad 2 input "AND" gate, a CMOS 4081. These gates only produce a HIGH output, when BOTH the inputs are HIGH. When the key wired to 'E' is pressed, current through R1 and D1 switchs Q5 on.The relay energises; and Q5 is 'latched on' by R8. Thus, the Alarm is set by pressing a single key,say one of the two non-numeric symbols.
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An AC triggered switch for low frequency signals.
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