JPS6047780B2 - optical remote control transmitter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is capable of transmitting an optical signal consisting of two pulsed light emissions, and provides a receiver for selectively receiving this optical signal in a controlled device to remotely control the device. Regarding optical remote control transmitters.

First, an optical remote control transmitter according to the present invention will be explained with reference to FIG.

When the power switch SWI is turned on, a DC voltage is obtained from the DC-DC converter A.
The second light emitting capacitor C2, Co, the charging capacitor Co via the Zener diode ZD, and the resistor R. The trigger capacitor Cl is charged to the illustrated polarity via the primary side of the trigger transformer Tt. Now, when one of the plurality of transmitting switches 5W0 to 5Wn, for example SW2, is turned on as shown in the time chart a of FIG. 2, the charging capacitors Co, Co, Cs, etc.

A current flows through a, R, O, R, and the voltage across the resistor R turns on the transistor TR2 as shown in FIG. 2d. As a result, the signal passes from the DC power supply E through the delay capacitor Co and the resistors R and 2, and the transistor T
R. A current flows through the collector and emitter of the delay capacitor C9, and the delay capacitor C9 is charged as shown in FIG. 2e in accordance with the time constant of C9 and R12. The charging voltage is the transistor TR. operating voltage Vb. When the voltage is reached, the transistor TR3 is turned on as shown at f in FIG. 2, and the resistance R is turned on. Trigger thyristor SC by the voltage of
When R2 is turned on, the charge in the pre-charged trigger capacitor Cl is discharged through the primary side of the trigger transformer Tt, and the pulse generated on the secondary side lights up the light-emitting lamps X and L, such as xenon 7 discharge tubes. Triggered. As a result, the electric charge charged in the first light emitting capacitor Co is transferred to the diode D. The light is discharged through the light-emitting lamps X and L, and the first light is emitted as shown in FIG. Luminous lamp X. Simultaneously with the first light emission of L, the charge in the charging capacitor C6 is transferred to the Zener diode ZD and the light emitting lamp X. It is discharged through L.

At the same time, the charge on the capacitor C3 is also increased to the luminescent lamp X. L and the primary side of the trigger transformer Tt. Luminous lamp X. After the light emission of L is completed, the first light emission capacitor C
Since the charge of 2 is discharged, the Zener diode ZD
The circuit that charges the first light-emitting capacitor C2 through the resistor R2 continues to discharge the charge in the charging capacitor C6, and a Zener voltage Z having the polarity shown in the first diagram is generated in the Zener diode D. This Zener voltage Vz serves as a power source for the timer circuit C. Then, by turning on the transmitting switch SW2 of the timer circuit C, the second light emitting thyristor SCRl is turned on after the timer time based on the time constant of the predetermined resistor Rl6a and the operating capacitor C5 has elapsed, and the second light emitting thyristor SCRl is turned on and charged in advance. The electric charge of the second light emitting capacitor C3 is transferred to the light emitting lamp X. By discharging through L, a second light emission is performed following the first light emission. Resistors Rl6a-Rl6 connected to each transmission switch SW2-SWn
Since the value of n is changed and the time constant with the operating capacitor C5 is changed, the optical signals obtained when each of the transmitting switches SW2 to SWn is turned on are signals with different pulse intervals Tp.

By configuring the timer circuit using a programmable union transistor, the present invention can apply a pulsed voltage between the gate and cathode of the second light emitting thyristor, making it possible to accurately turn on the timer circuit. It is an object of the present invention to provide a transmitter that not only has a simple and inexpensive circuit configuration but is also easy to implement and can accurately and stably perform the second light emission following the first light emission. .

One embodiment of the present invention will be described below with reference to the drawings.
In the figure, the timer circuit C consists of a programmable union transistor P.22, in which a small Zener diode voltage (z) is applied between the gate and cathode via resistors R3, R5, and R6. U. T (hereinafter abbreviated as transistor P.U.T.), and this transistor P.T. U. There is a resistance between the anode and cathode of T. Transmission switch circuits SW2 to SWn and resistors Rl6a to Rl6. ．． Series circuit and working capacitor C5
It consists of a time constant circuit and a time constant circuit.

Since the present invention has the above-described configuration, the operation from the first light emission until the Zener voltage Vz is generated in the Zener diode is as described above.

Due to this Zener voltage Z, a current flows through the transmission switch SW2, the resistor Rl6a, the diode D4, and the operating capacitor C5, and the operating capacitor C5 changes to the polarity shown in Fig. 1 according to the time constant of Rl6a (5C5). As shown in c, as the charging progresses, the Zener voltage V
z is divided by resistors R5 and R6, and transistor P.
U. Added to the gate of T.

The charging voltage of the operating capacitor C5 is connected to the transistor P. U
．． When the operating voltage Vdl of T is reached and it is turned on, the charge of the operating capacitor C5 is transferred to the transistor P. U. The voltage of the resistor R3 turns on the second light-emitting thyristor SCRl, and the electric charge of the second light-emitting capacitor C3, which has been charged in advance, is discharged through the second light-emitting thyristor SCRl and the light-emitting lamp X. ．． The light is discharged through L, and a second light emission follows the first light emission.
As described above, according to the present invention, the timer circuit is configured using a programmable union transistor, so that a pulse voltage is applied between the gate and cathode of the second light emitting switch circuit by using the transistor. The timer circuit can be easily configured at low cost, is easy to implement, and accurately and stably performs the second light emission following the first light emission. A transmitter that can be used can be provided.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram showing an embodiment of the transmitter of the present invention, and FIG. 2 is a time chart for explaining its operation. SW2~SRn...Transmission switch, Rl6a-
Rl6n...Resistor, SCR2...Trigger thyristor, C7, C8...Trigger capacitor, Tt...Trigger transformer, X. L...
...Light-emitting lamp, C2...First light-emitting capacitor, C3...Second light-emitting capacitor, SC
Rl... Thyristor for second light emission (switch circuit for second light emission), C... Timer circuit, P. U.
T...Programmable union transistor, Vd1...Operating voltage, C5...
Operating capacitor, C6...Charging capacitor, Z
D... Zener diode (constant voltage element).

Claims (1)

[Claims] 1 By triggering the light-emitting lamp, the electric charge of the first light-emitting capacitor charged in advance is discharged through the light-emitting lamp to emit the first light, and the charge capacitor charged in advance through the constant voltage element is discharged. The voltage generated in the constant voltage element by discharging the charge through the constant voltage element at the time of the first light emission is used as the power source of the timer circuit, and after the timer time set by the timer circuit has elapsed from the time of the first light emission. , a second light emission switch circuit is activated, and the electric charge of the second light emission capacitor, which has been charged in advance, is discharged through the second light emission switch circuit and the light emitting lamp, so that the second light emission is performed. In the machine, the timer circuit is an optical remote control consisting of a programmable union transistor to which the voltage of a constant voltage element is applied between the gate and cathode, and a time constant circuit for applying the operating voltage between the anode and cathode of this transistor. control transmitter.