Amateur Extra › E6 Circuit Components › E6D09
E6D09
What devices are commonly used as VHF and UHF parasitic suppressors at the input and output terminals of a transistor HF amplifier?
Pick an answer to check it.
Answer: C. Ferrite beads
Ferrite beads on transistor leads add loss at VHF and UHF while having little effect at HF. They damp unwanted parasitic oscillations without hurting normal operation.
Tip: Ferrite beads kill VHF parasitics.