Showing posts with label transistor. Show all posts
Showing posts with label transistor. Show all posts
Tuesday, September 3, 2013
Transistor Water Sensor Alarm
This water sensor alarm circuit diagram is designed using common electronic components. Thewater sensor alarm circuit may operate an active buzzer, to make a sound when is reached a certain level of water.
Transistor Water Sensor Alarm Circuit Diagram
Because water sensor and control circuit for buzzer are located on the same printed circuit board, indicator, together with 9 V battery and buzzer can be mounted in a compact case.
When water reaches the sensor, the base of T1 is connected to the positive supply terminal. Therefore, T1 and T2 are open, so that buzzer BZ1, will be activated. Sensitivity reduction of the circuit can be done by increasing the value of R2.
Transistor Water Sensor Alarm Circuit Diagram
When water reaches the sensor, the base of T1 is connected to the positive supply terminal. Therefore, T1 and T2 are open, so that buzzer BZ1, will be activated. Sensitivity reduction of the circuit can be done by increasing the value of R2.
Saturday, April 13, 2013
Simple 500W Audio Power Amplifier Circuit Diagram with Transistor
We take transistor MJL2194 and MJL2193 for pressure output signal.so the amp has a capability for enormous instantaneous current potential.
Circuit Functional
I use the -85 volt when the output current is supplied to the drive 350 to 340 very hot. Increase the output present, but it was once too chilly. The output to warmth up sooner than a regular open it. Sounds evident, but sound high quality is somewhat excellent.
I recomment it by way of turning out for the evening. If the force is installed on the steel part out.
I assume simple. View full above, the statement that R 30 ohm then the voltage throughout the 0.86 V exhibit that the brand new via its 29 mA for those who add a file to / – eighty five V, and think that the voltage throughout the part physique. It was the identical in each the R 30 ohm to get an awfully light 5 zero.86 = 5.86 V and the present I can be 5.86/30 = zero.195 A = 195 mA, and the specification of mje340. mje350 get Ic (max) = 500 mA, so it is pure for it to heat up. Actually, it isn't essential to adhere to sync tr output must be interested in the following two tr power force is healthier. For VR will have to be R300 .
Sunday, April 7, 2013
Radio only 1 transistor without electricity
Experts and amateurs have been Experimenting with radios without batteries since the wireless communication started.
In many designs weve seen radios that operate without power, but all are known to use the diode 1N34. (Crystal Radio).
In many designs weve seen radios that operate without power, but all are known to use the diode 1N34. (Crystal Radio).
Although significant improvements have increased the sensitivity and selectivity of these system circuits, Performances were limited until new techniques have emerged.
Here we have the first transistor radio that works without batteries, it is powered by random electric fields are everywhere in the atmosphere.
These circuits are relatively cheap to manufacture, have more volume and better reception from the crystal radios.
This circuit is a medium wave receiver and attaches easily to frequencies from 500Khz to 11Mhz.
To get good results in the reception of radio stations, we should give great importance to the ground and the antenna.
To listen to distant and weak stations we have to use a battery 9volt parallel with the capacitor C4 with its positive side between R2 and C4.
The coils are in the frequency of 500-1500Khz is tight and closely wrapped.
The coils are in frequency of 1.5-11Mhz is more tighter and more closely wrapped.
This circuit is a medium wave receiver and attaches easily to frequencies from 500Khz to 11Mhz.
To get good results in the reception of radio stations, we should give great importance to the ground and the antenna.
To listen to distant and weak stations we have to use a battery 9volt parallel with the capacitor C4 with its positive side between R2 and C4.
The coils are in the frequency of 500-1500Khz is tight and closely wrapped.
The coils are in frequency of 1.5-11Mhz is more tighter and more closely wrapped.
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