PWM s ograničavanjem struje
Variable Frequency Pulse width modulator Popis dijelova: R1,R6,R11 = 10K C1 = 1000uF, 64V R2,R9 = 1K8 C2 = 10nF, polyester R3 = 100 ohm C3 = 100uF, 64V R4,R8 = 1K C4 = 22nF R5 = 22K C5 = 47uF, 35V R7 = 1M *R10
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Automatsko paljenje ventilatora
Automatsko paljenje ventilatora IC1 LM741 Op-Amp 276-007 LM741CN-ND LM741CN NE741,µA741, etc. Q1 2N2222A transistor 276-2009 2N2222A-ND 2N3904 See text D1 1N4148 Diode 276-1122 1N4148GICT-ND 1N4001 1N4001, or others Th1 50K Thermistor KC005T-ND 96F3309 KC005T in prototype Re1 12V Relay 275-249 Z753-ND 83F8057 RS is 1A
Izmjenični ON-OFF prekidač 2
Izmjenični ON-OFF prekidač 2 Parts List Resistors are 1/4 Watt, 5% R3,R5,R6 = 1K (brown-black-red) R1,R7 = 2K7 (red-violet-red) Pin-out for Q1 R4 = 100K (brown-black-yellow) R2 = 180K (brown-gray-yellow) C1 = 10uF/16V, electrolytic C2 = 220uF/16V, electrolytic C3 = 1uF/16V, electrolytic D1 = 1N4148,
Izmjenični ON-OFF prekidač
Izmjenični ON-OFF prekidač Parts List Resistors are 1/4 Watt, 5% R1,R3 = 10K (brown-black-orange) R2 = 100K (brown-black-yellow) Pin-out for Q1 R4 = 220 Ohm (optional) (red-red-brown) C1 = 0.1uF, (100nF, 104) C2 = 0.01, (10nF, 103) D1 = 1N4001 (see text) Led1 = Led,
Aktivna antena 1-20dB, 1-30 MHz
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
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