Pulse width modulator Popis dijelova: R1 = 330 oma R2 = 1 MegaOhm P1 = 100K potenciometar (Lin) C1 = 0.1uF, (100nF) keramike C2 = 0.01uF, (10nF) keramike C3 = 0.01uF, (10nF) keramike D1 = 1N4004 (ili Schottky) Led = Vaš izbor Q1 = IRF513,
Pulse width modulator Popis dijelova: R1 = 1K R2 = 47 Ohm P1 = 50K potenciometar C1 = 0.1uF, (100nF), keramike C2 = 0.01uF, (10nF) keramike C3 = 470uF, 25V, elektrolita D1, D2 = 1N4148, opće namjene signalne diode D3 = MBR1645, NTE6081, ili slično.
DC/AC Inverter (NE555) Popis dijelova: R1 = 10K R2 = 100K R3 = 100 oma R4 = 50K potenciometar, Linearni C1, C2 = 0.1uF C3 = 0.01uF C4 = 2700uF Q1 = TIP41A, NPN, ili ekvivalent tranzistora Q2 = TIP42A, PNP, ili ekvivalent tranzistora L1
Elektroničko zvonce (kanarinac) Parts List: R1 = 4K7 (yellow-violet-red) R2 = 47K (yellow-violet-orange) C1 = 100uF, 16V, electrolytic C2 = 100uF, 16V, electrolytic C3 = 0.01uF (10NF or 103) C4 = 0.022uF (22NF or 223) Q1 = 2N2222 (or BC109C, NTE123A, PN100, etc) D1 =
Bug Detector / Detektor prislušnih uređaja Parts List: R1 = 390 ohm, 5% R2 = 390 ohm, 5% C1 = 1000uF, 10V C2 = 1.5uF, 10V C3 = 3.9nF C4 = 20pF, trimmer C5 = 10nF (0.01uF or 103) IC = 7413 or 74LS13 (2)
Aktivna antena 1-20dB, 1-30 MHz Lista dijelova i ostalih komponenti: Poluvodiči: Q1 = MPF102, JFET. (2N4416, NTE451, ECG451, etc.) Q2,Q3,Q4 = 2N3904, NPN transistor Otpornici: Svi otpornici su 5%, 1/4-watt R1 = 1 MegOhm R5 = 10K R2,R10 = 22 ohm R6,R9 = 1K R3,R11
Aktivna Antena AA-7 HF/VHF/UHF, 3-3000MHz Lista dijelova i ostalih komponenti: Poluvodiči: Q1 = MFE201, SK3991, 3N201 (R2 not needed), or NTE454 N-Channel, dual-gate MOSFET, TO-72 (see text) Q2 = 2SC2570, NTE107. Silicon RF IF/Amp, NPN transistor (see text) Note: If you use the NTE107 as
555 Pulsni Timer Oscillator Lista dijelova: R1 = 1 Meg, Preset Pot R2 = 10K R3,R4 = 1K C1 = 10uF, 16V, electrolytic C2 = 0.01uF, ceramic Q1 = BC547 (Gen Purp NPN) or 2N3904 Q2 = 2N2222 (Hi Current NPN, up to 800mA) D1