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Small Capacitance Module
Small Parts
Elements of Science
Optional VDR (type VDR300) transient suppression for use with inductive loads
Velleman K4900 Telephone Amplifier Kit Physics Small Capacitance ModuleGeneral Information Manufacturer Velleman Part Number K4900 Product Type Electronic DIY Kit Miscellaneous Skill Level Rookie Required Skills Soldering Batteries Power Supply: 7 9VAC or 9 12VDC 150mA. Not Included Features This telephone amplifier may be used as a free standing amplifier with speaker Can be used to listen to a telephone conversation, or the output may be connected to an amplifier or mixing panel Input: isolation transformer interface,
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