3 Channel Spectrum Analyzer using LM3900, AN6884 3 Channel Spectrum Analyzer using LM3900, AN6884 Parts: R1 100K 1/4W Resistor R2 820K 1/4W Resistor R3, R14, R16, R18 2.2 Meg 1/4W Resistor R4, R5, R6 22K Pot R7, R8, R9, R25, R27, R29 10K 1/4W Resistor R10, R11, R12 680 Ohm 1/4W Resistor R13. R15, R17 […]
Posts tagged RF
Rf Preamplifier
Rf Preamplifier using dual gate mosfet BF990A Rf Preamplifier using dual gate mosfet BF990A
ESR meter circuit
ESR meter circuit using 78L05, Z86E0412, 4094, BC328, BC558, BC338, BC548, 1N4148, 1N4002
400 watts full power transistor audio amplifier circuit
400 watts full power transistor audio amplifier circuit 400 watts power transistor audio amplifier circuit using TR 7199P, 6L6GC, 6SN7 Parts: R1 10 kΩ C1 0.22 µF Q1 7199 P R2 100 kΩ C2 0.2 µF Q2 6L6GC R3 220 kΩ C3 0.5 µF Q3 6L6GC R4 820 kΩ […]
Simple Ohmmeter Driver circuit
Simple Swr Avometer Driver circuit Synthetic Isolators, great for checking the SWR of antennas
Bootstrap AUDIO circuit using transistor
Bootstrap AUDIO circuit AND LAYOUT Bootstrap driver Micro circuit using TIP3055 tip2955 TIP42 tip41 MJE340 What is bootstrapping circuit? Within an integrated circuit a bootstrap method is used to allow internal address and clock distribution lines to have an increased voltage swing. Tops bootstrap circuit uses a coupling capacitor, formed from the gate/source capacitance of […]