DOUBLER SOLENOID DRIVER DETAILS:
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DOUBLER SOLENOID DRIVER
The end positions can easily be adjusted by external knobs Open mountings. My options were to try this out or run a new cable on the outside of the house which would have been a huge hassle. Is 11 volts what the doubler should be reading with the station master porering it? The actuator circuit according to claim 1 wherein said flyback-driven relaxation oscillator circuit includes a rectifier having one electrode coupled to said junction of said first gas-valve solenoid and said switch device; an accumulator capacitor connected to a second electrode of said rectifier to accumulate said flyback voltage; and a discharge device connected between said accumulator capacitor and said second gas-valve solenoid to discharge energy from said capacitor into said second gas-valve solenoid when the accumulated flyback voltage reaches a threshold.
The actuator circuit according to claim 2 wherein said relaxation oscillator circuit further includes a voltage doubler arrangement connected between said junction and said second gas-valve solenoid, said voltage doubler arrangement including a series circuit formed of a capacitor and a diode, said series circuit being connected in shunt across said switch device, and another diode in antiparallel with the series circuit of said capacitor and diode. The doubler solenoid circuit according to claim 2 wherein said flyback-driven relaxation oscillator circuit includes a capacitor and diode connected between said junction and a reference voltage point, and wherein said second gas-valve solenoid has a first end connected to said discharge device and a second end connected to a junction of said capacitor and said diode.
The actuator circuit according to claim 4 further comprising a second diode in anti-parallel with the first-mentioned diode and capacitor between said junction and said reference voltage point.
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The actuator circuit according to claim 1 wherein said controller circuit includes means for detecting the doubler solenoid of the switch device, and means doubler solenoid cause a service indicator lamp to light when the controller circuit detects that the switch element is not responding to the output pulses provided from said controller circuit. The actuator circuit according to claim 1 wherein said second gas-valve solenoid has an impedance that is greater than the impedance of said first gas-valve solenoid.
A combination of a dual-solenoid gas valve arrangement and an actuator circuit therefor, comprising:. The combination according to claim 8 doubler solenoid, wherein said second solenoid has a greater impedance than the impedance of said first solenoid.
The combination according to claim 8wherein said switch device includes a transistor having a control electrode supplied by said controller circuit with said output pulses, and said controller circuit includes means for detecting the condition of the transistor, and means to cause a service indicator lamp to light when the controller circuit detects that the transistor is not responding to the output pulses provided from said controller doubler solenoid. USB1 en. Flow Controls.
What’s All This Solenoid Driver Stuff, Anyhow?
The decoder circuit also provides a booster mechanism that acts like a capacitive discharge system, which means that the inrush current to pull a valve coil in is lowered and the holding current is all that needs to be handled by the cabling. The effect of this is to help in a situation when cable and the connections are failing or not up to scratch. Also provided is Lightning protection at the valve and also for the cabling back doubler solenoid the irrigation controller, and on the multiplex control cable and Electronic fuse protection to limit fault conditions at the decoder doubler solenoid causing damage to the controller or the cabling.
In a preferred embodiment, the components contained within both the encoder 11 and the decoder 13 should be encapsulated in a watertight, waterproof housing so that the decoder circuit 13 may be buried in the ground, along with the associated solenoid valves 17 a and 17 b.
The encoder is then disposed adjacent to the control unit. In yet a further embodiment, the positive half decoder circuit 13 b or negative half decoder circuit 13 a could be built into or encapsulated with a solenoid coil. In this manner doubler solenoid would operate normally on a supplied 24 volt AC supply, or one of each could be used with an encoder circuit 11 as described. The embodiment presented has been designed to be most economical and cost effective. Changes could be made to achieve the same result, for example by changing the triac to a silicon controlled rectifier or other transistor based circuit, or even a mechanical relay, and using a different circuit to achieve the turn-on timer function such as a timer, a Schmitt trigger CMOS circuit or even a microprocessor, although these are considered to be clumsy implementations.
It should be appreciated that the scope of the invention is not limited to the embodiment doubler solenoid herein. In particular, the invention has application in doubler solenoid areas besides use in automatic sprinkler systems.
Troubleshooting Doublers LawnSite
The invention would prove equally suitable for use in any application utilizing one or doubler solenoid AC supplies and one or more AC loads which are operable on half wave rectified power supplies. Any such modifications or variations which fall within the purview of this description are intended to be included therein as well. It is understood that the description herein is intended to be illustrative only and is not intended to be limitative. No, create an account now. Yes, my password is: Forgot your password? That is, the additional sprinkler unit is merely added to an existing unit and the encoder doubler solenoid decoder circuits are installed. The decoder circuits 13 a and 13 b overcome problems encountered with modern controllers that incorporate diagnostics and fault over-ride features, which can be falsely tripped by prior art devices, leading to faulty operation.
The turn-on delay implemented doubler solenoid the decoder circuit 13 provides a soft start mechanism so that the two valves being controlled don't electrically change quickly and hence this limits inrush current and the chances of the electronic fuse in the controller from tripping. The turn-off delay implemented in doubler solenoid decoder circuit 13 provides a soft shutdown mechanism at the valve end that does not let the collapsing energy field in the coil pass back to the control system thus eliminating random electronic fuse tripping.
The decoder circuit also provides a booster mechanism that acts like a capacitive discharge doubler solenoid, which means that the inrush current to pull a valve coil in is lowered and the holding current is all that needs to be handled by the cabling. The effect of this is to help in a situation when cable and the connections are failing or not up to scratch. Also provided is Lightning protection at the valve and also for the cabling back to the irrigation controller, and on the multiplex control cable and Electronic fuse protection to limit fault conditions at the decoder end causing damage to the controller or the cabling. In a preferred embodiment, the components contained within both the encoder 11 and the decoder 13 should be encapsulated in a watertight, waterproof housing so that the decoder circuit 13 may be buried in the ground, along with the associated solenoid valves 17 a and 17 b. Your only getting 11 volts past the doubler because the doublers solenoid/coil is toast.
A doubler is simply a solenoid fired switch that "flips". Independent control of two solenoid operated valves over two wires in an. of West Doubler solenoid, Calif., under the trademark “Doubler” and is described in U.S.