Short circuit protection
Diagram Parts 5K 10uf Led 10k bc547 relay 5v 2.2k ua741 button 220ohm 5.6v zener 50k in4007
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Long range FM transmiter
Coil - 18swg wire,10mm diamiter aircore ,7Turns 5pf trimer Bfy51- TR 470pf -2 473pf 22K -2 33ohm -1w Fm reciver kit
FM transmiter
2Km transmiter L1,L2 =10Turns of 1mm wire-3mm form Parts 2N3904-2 22pf 5Pf 0.001Uf-2 0.33uf 5-30Pf trimer 47K 22K 1K 5.6K 220ohm 30inch wire antena Fm reciver kit
Universal step up converter
12V to 30v converter Parts list 1000uf 25v -2 100nf -2 1000uf 50v-2 Mbr10100 diode irfz44n 50W led ferrite ring( 10.3mm-13.3mm) 2*10T # 0.5vmm wire ne555 10nf 1nf 39K 18K 680ohm In4148
AM transmitter an reciver
Transmitter Parts Bc109 Am coil -80T(200uh) 47k 1K 100Pf 1Nf 4.7Uf 500pf trimer MW Reciver Parts Bc547 47n c9018 22n 330k 100n -2 4.7K 10uf 10K 200pf trimer 380K 22K AM reciver coil
One button on off switch
Parts 2N5401 pnp -1 2N5551 npn -2 470k -1 10K -3 1K -1 1M -1 100K -1 220ohm -1 1uf -1 led -1 Button -1
24 Hour Timer
Cd4060 Timer Parts Cd4060 -1 100nf -2 in4148 -2 4.7k -3 10uf -1 led -2 150K -1 button -1 470K -preset relay -1 100K -1 4.7m -1 Time range pin range 7 90s 5 3m 4 6m 6 12m 14 20m 13 ...
Ne555 flyback controller
12V to 30kv converter Parts Ne555 flyback transformer 10n 12v supply 330N dot board 1N primary 7Turns 39K secondary 1200Turns 18K 680ohm In4148 irfz44n
Adjustable power supply
0-25V 0-3A adjustable power supply Parts Lm350 D313 22Uf 220ohm In4007 2k preset 10K preset
Metal detector 555
Metal detector Parts 1K 0.01uf NE555*2 100k 0.0027uf Bc547 470oms 100uf Buzzer 2m 470uf 26swg coil 100k-control-2 20k-control 10k
Siren circuit
3 Tone siren Police Fire Ambulance Parts list D400 1uf-1 270K-1 bc548-4 10uf-2 33K-1 A933-2 103-3 3.3K-3 22K-1 LED-1 1k-1 1w sp 100k-1 27k-2 470k-1 470 oms-1
Ultrasonic sensor with 555
Ultra sonic sensor with ne555 timer ic sercuit diagram Ultra sonic sensor Parts Ne555 1k 10K control 3.3Pf 10Uf
