Pre-amplifier plug for musical instruments with battery retaining and switch activating rod means
阅读：29发布：2023-08-25
专利汇可以提供Pre-amplifier plug for musical instruments with battery retaining and switch activating rod means专利检索，专利查询，专利分析的服务。并且A plug with a self-contained solid state preamplifier primarily for musical instruments. This device includes resisters, capacitors and battery means, coupled to pre-amplify input signals to conventional amplifiers.，下面是Pre-amplifier plug for musical instruments with battery retaining and switch activating rod means专利的具体信息内容。
1. A pre-amplifier plug for musical instruments, comprising a casing, a male plug carried by said casing for connecting the musical instrument to an amplifier, a transistorized circuit for pre-amplification, carried within said casing, cable means carried by said plug for connecting said plug to the musical instrument and the pre-amplifier circuit, battery means carried by said plug providing self-contained power means for said preamplifier circuit, a pair of battery retaining rods, carried by said casing, one of which serves as switch means for said circuit, spring contact means carried within said casing providing connection means with the transistorized circuit.
2. The combination according to claim 1, wherein said rods within said casing, snappably engage with snap wires for retaining said battery within said casing and said spring contact means within said casing serve as electrical connection means for said circuit.
3. The combination according to claim 2, wherein one of said rods is provided with a pair of notches, so that when said rod is pulled outwards the second or end notch will engage with this associated snap wire and will close said switch of said circuit, thus energizing said transistorized pre-amplifier circuit within said plug.
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