JPS61174229U - - Google Patents
Info
- Publication number
- JPS61174229U JPS61174229U JP5598485U JP5598485U JPS61174229U JP S61174229 U JPS61174229 U JP S61174229U JP 5598485 U JP5598485 U JP 5598485U JP 5598485 U JP5598485 U JP 5598485U JP S61174229 U JPS61174229 U JP S61174229U
- Authority
- JP
- Japan
- Prior art keywords
- transistor
- base
- resistors
- conductive
- resistor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Electronic Switches (AREA)
Description
第１図は本考案の一実施例によるトランジスタ
スイツチング回路の接続図、第２図は従来のトラ
ンジスタスイツチング回路の接続図である。
１……信号源、２……入力端子、３，６，１３
……抵抗、４……出力端子、５，１１……トラン
ジスタ、１４……コントロール端子、１５……電
源、１６……録音再生切換え出力端子。
FIG. 1 is a connection diagram of a transistor switching circuit according to an embodiment of the present invention, and FIG. 2 is a connection diagram of a conventional transistor switching circuit. 1... Signal source, 2... Input terminal, 3, 6, 13
...Resistor, 4...Output terminal, 5, 11...Transistor, 14...Control terminal, 15...Power supply, 16...Recording/playback switching output terminal.
Claims (1)
ジスタと、エミツタがアースに接続された第２の
トランジスタを備え、前記第１のトランジスタの
ベース・エミツタ間に第１の抵抗を接続し、該第
１のトランジスタのベースと第２のトランジスタ
のベースを第２及び第３の抵抗の直列回路で第３
の抵抗が第２のトランジスタのベースに接続され
るよう接続し、前記第２及び第３の抵抗の接続点
をアースすることにより第１のトランジスタを導
通させ、アースしない場合、第１のトランジスタ
は導通せず、第２のトランジスタのみが導通する
よう第１及び第２、第３の抵抗の値を選定してな
るトランジスタスイツチング回路。 (2) 第２のトランジスタを信号の減衰を目的と
して使用した実用新案登録請求の範囲第１項記載
のトランジスタスイツチング回路。[Claims for Utility Model Registration] (1) A first transistor whose emitter is connected to a power source, and a second transistor whose emitter is connected to ground, and a transistor between the base and emitter of the first transistor. 1 resistor is connected, and the base of the first transistor and the base of the second transistor are connected to a third resistor through a series circuit of second and third resistors.
is connected to the base of the second transistor, and the connection point of the second and third resistors is grounded to make the first transistor conductive. If the first transistor is not grounded, the first transistor is A transistor switching circuit in which the values of the first, second, and third resistors are selected so that only the second transistor is conductive and not conductive. (2) The transistor switching circuit according to claim 1, which uses a second transistor for the purpose of attenuating a signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5598485U JPS61174229U (en) | 1985-04-15 | 1985-04-15 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5598485U JPS61174229U (en) | 1985-04-15 | 1985-04-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61174229U true JPS61174229U (en) | 1986-10-30 |
Family
ID=30579167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5598485U Pending JPS61174229U (en) | 1985-04-15 | 1985-04-15 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61174229U (en) |
-
1985
- 1985-04-15 JP JP5598485U patent/JPS61174229U/ja active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS61174229U (en) | ||
| JPS6020625U (en) | Stabilized power supply circuit | |
| JPS6126350U (en) | stereo indicator circuit | |
| JPS599619U (en) | amplifier circuit | |
| JPS6157636U (en) | ||
| JPS5973821U (en) | electronic volume device | |
| JPS60167432U (en) | high frequency switch | |
| JPS5884691U (en) | tape recorder with radio | |
| JPH03119216U (en) | ||
| JPS5893010U (en) | Muting circuit | |
| JPH0386616U (en) | ||
| JPS6157690U (en) | ||
| JPS5896324U (en) | Output circuit device | |
| JPS6142132U (en) | Signal switching/mixing device | |
| JPS60101831U (en) | Signal switching circuit | |
| JPS6017052U (en) | signal mixing circuit | |
| JPS59140516U (en) | Amplifier protection circuit | |
| JPH02113424U (en) | ||
| JPS61168712U (en) | ||
| JPS6293807U (en) | ||
| JPS5866712U (en) | Muting circuit | |
| JPS5813718U (en) | variable gain amplifier circuit | |
| JPS59114617U (en) | power amplifier circuit | |
| JPS6275643U (en) | ||
| JPS6047326U (en) | Waveform shaping circuit |