Apparatus as claimed in claim 3 wherein the turn-off delay circuit comprises a diode and capacitor connected in parallel, connected in series with an inductor, which when in circuit is connected across the load which is connected to the relevant output. A control circuit as claimed in claim 17 wherein the value of the capacitor and the value of the inductor are selected to delay turn off of the relevant output by holding the output high for a period of at least 0. When the station 3 of the reticulation controller is turned off and the power to the solenoid is removed there is a collapsing field generated by the coil L 1 of the solenoid valve 17 b. I wouldn’t mind seeing a photo of a dead doubler cut open. In a preferred embodiment the turn-off delay circuit comprises from each output to common, an LC snubber circuit. Yes, my password is: The decoder portion 13 incorporates switching circuits 43 a 43 b , interfaced with turn on delay timers 45 a 45 b respectively, to delay operating the loads at switch on, and turn-off delay timers 47 a 47 b to hold the loads on after switch off.
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If we can’t fix it, we will send you an Amazon e-Card reimbursement for your product purchase price. Easy to install, had it working in less then an hour.
Is 11 volts what the doubler should be reading with the station master porering it? ComiXology Thousands of Digital Comics. English Choose a language for shopping. A control circuit as claimed in claim 14 wherein the turn-off delay circuit comprises doubller each output to common, an LC snubber circuit.
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PlanterNov 3, Battery management system and method and battery powered appliance incorporating the same. Similarly, a turn-off delay circuit 47 b is formed by inductor L 2capacitor C 4 and diode D 6in circuit across the output 29 a and the common C or return, in circuit across the coil L 1 of the solenoid valve 17 b. A difficulty with this system is that with modern irrigation controllers incorporating monitoring of outputs to solenoid valves, this has resulted in outputs cutting out due to over-current, or outputs being skipped, due to the doublee controller falsely detecting a fault condition.
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Customers who viewed this item also viewed. There was a problem completing your request. In one arrangement the first decoder output and the second decoder output each include an inductive turn-off delay circuit.
In the decoder circuit 13 the diode 35 a conducts, resulting a negative voltage being available at half wave rectifier 34 output 39 a. It is understood that the description herein is intended to be illustrative only and is not intended to be limitative.
It won’t kick on either zone.
PurpHazeNov 3, Showing of 16 reviews. In accordance with another aspect of the present invention, there is provided a method of solehoid controlling two loads connected to two power supplies by a source conductor and a return conductor, comprising connecting an encoder portion doublrr described above between a source conductor and the power supplies, and connecting a decoder portion as described above between a source conductor and the loads.
In this manner, viewing the circuit arrangement current flow using the conventional current convention, a positive going voltage at the first decoder input will be available at the first decoder output but only after the predetermined period has timed out, and a negative going voltage at the second encoder input will be available at the second decoder output but dobler after the predetermined period has timed out.
I connect the station master to the doubler and fire it. Don’t see what you’re looking for? The turn on delay timer to time out a predetermined period before doublee said switching circuit may be a transistor based RC timer circuit.
The first switching circuit and the second switching circuit each preferably use a low gate current triac. I know I should soleboid from the clock, but it’s way back there. Apparatus as claimed in claim 3 wherein the turn-off delay circuit comprises a diode and capacitor connected in parallel, connected in series with an inductor, which when in circuit is connected across the load which is connected to the relevant output.
It didn’t last very long.
Amazon Inspire Digital Educational Resources. I remove the doubler and take a volt reading on the station master. 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.
Conversely, negative going voltage at the first encoder input and a dkubler going voltage at the second encoder input will be blocked.
Apparatus as claimed in claim 4 wherein the value of the capacitor and the value of the inductor are selected to delay turn off of the relevant output by holding the output high for a period of at least 0.
All other field currents below the varistors clamping voltage are loaded into L 2 and used to hold the charge in capacitor C 4.
Apparatus as claimed in claim 2 wherein the turn-off delay circuit comprises from each output to common, an LC snubber circuit.