AND
R1 = 120 Ohm (brown, red, brown)
R2 = 1,5 KOhm (brown, green, red)
R3 = 270 Ohm (red, violet, brown)
R4 = 82 KOhm (gray, red, orange)
C1,C5 = 100pF (ceramic)
C2,C3 = 1nF (ceramic)
C4 = 2,2pF (ceramic)
D1,D2 = 1N4148 diode
Transistor = BFR90, BFR91, BFW92
Misc = PCB, 6pins, solder, 9V battery clip

HI ALL THIS FOR YOU SCHEMATIC YOU CAN HEAR FROM TO FAR WAY


sound in the range of 53 to 91 kHz. If you divide

اهلين

موضووووع جدا مفيد

انا مبتدأ

وانا ابغى ( دائرة تشغيل 35 لمبة Led من يفضل V3 ااو V5 ااو V12 )


اللمبات تعمل على (v3 - V3.5 ) على حسب علمي هي بيضاء


وشكرا ( لا تنسى انا مبتدأ = لا تصعبها )

في انتظار الرد جزاكم الله خيرا .....

my name is loai, im doing final project Solar cell and wind turbine , i will be very thankfull for u if u could send me circuit diagram & and block diagram for ( 12DC V inverter to 220AC V ) thanks so much

send me 12DC V inverter circuit to 220ACV
i need circuit digram and block diagram
thank u
eng.loai***********

Emergency Light & Alarm

Powered by two AA NI-CD batteries
Four switchable options

Parts:
R1____________220K 1/4W ResistorR2____________470R 1/2W ResistorR3____________390R 1/4W ResistorR4______________1K5 1/4W ResistorR5______________1R 1/4W ResistorR6_____________10K 1/4W ResistorR7____________330K 1/4W ResistorR8____________470R 1/4W ResistorR9____________100R 1/4W ResistorC1____________330nF 400V Polyester CapacitorC2_____________10΅F 63V Electrolytic CapacitorC3____________100nF 63V Polyester CapacitorC4_____________10nF 63V Polyester CapacitorD1-D5________1N4007 1000V 1A DiodesD6______________LED Green (any shape)D7___________1N4148 75V 150mA DiodeQ1,Q3,Q4______BC547 45V 100mA NPN TransistorsQ2,Q5_________BC327 45V 800mA PNP TransistorsSW1,SW2________SPST SwitchesSW3____________SPDT SwitchLP1____________2.2V or 2.5V 250-300mA Torch LampSPKR___________8 Ohm LoudspeakerB1_____________2.5V Battery (two AA NI-CD rechargeable cells wired in series)PL1____________Male Mains plug

tis simepl alram wather

Water Activated Alarm

simel alarm lezar you can used for any think


pointer.

12 Volt power supply

and here

A simple 9 Volt 2 amp supply using a single IC regulator.

any ask about leds here simple one for u just try



25 Light Sequencer using Xmas lamps


This circuit is same as the above setup to drive 25 small Xmas lights. The lights operate at about 200mA and 3 volts. The supply voltage is set to 5 volts and the 4017 counter output will drop about a volt using the 2N3053 transistors. The voltage on the emitters of the rows transistors will be about 0.7 volts less than the base so the lamp voltage will be about 3 volts. You can adjust the supply voltage for the desired current if necessary. It works the same way as the LED version but you need diodes in series with each light. Most any small diode rated at 500mA or more should work. I used 1N4001 diodes. Various NPN transistors can be used, I tried 2N2219A and 2N3053. The 2N3053 worked out better with a higher gain than the 2N2219A, but either one should work.

next.

Schematic


HI ALL ANY ONE LIK THIS ITS NICE

FOR LIE

مجهود تشكر عليه والله

بس انا ابي دائرة توضح لي شي يمكن غريب بالنسبة لكم

انا ابي اوصل مفتاح المصباح بمشغل اقراص بحيث طول ما المصباح شغال
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