By William G. Miller
Concept and purposes of neon lamps.
Read Online or Download Using and Understanding Miniature Neon Lamps PDF
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Additional resources for Using and Understanding Miniature Neon Lamps
Sample text
In Fig. 6-2A the minimum rated breakdown of V1 is 140 volts so K1 cannot operate until this potential is reached. When V1 does ionize, it will drop its characteristic maintaining voltage and the remaining voltage is dropped across K1. To find If, use the formula : Relay current I, = Transistor beta 4250K SET CONTROL SIGMA 1 5 0 K r' E F l m To find R, use 'the formula : Neon differential R= I, x 2 Diode X I is included to protect the transistor from the counter emf generated by the relay. Time delays can be incorporated in the circuit by connecting a capacitor between point A and ground.
Universal ac-dc aging circuit. 1A, 200PIV L1 = 22 TURNS, 12 GAUGE W IRE RANDOM WOUND ON 114" IRON ROD OF ANY CONVENIENT LENGTH The following chart represents nearly all of the neon lamps available in the United States as stock items. " This "Application" numbering system is necessary when it is realized that any change in the manufacturing process will indicate a change in the alpha-numeric designation. If, for instance, an equipment manufacturer wants a 5AG lamp with guaranteed ionization time specifications, it will be assigned an "A" number, even though it originally was a 5AG.
The form C contacts of K 1 allow C, to be connected to point A of Fig. 5-6 when the relay is operated. The sensor circuit, which may be simply a switch, will operate the relay whenever a count is to be recorded. When K 1 is released, C, will discharge through the 10k resistor and the circuit is ready for another cycle. The 10k resistor is for contact protection and should be small enough in value to allow for complete capacitor discharge. The speed of this circuit is restricted mainly by the operate and release times of K1.
