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As anode current inceases, voltage increases up to the peak point.

2SH25 Datasheet

If a linear ramp is required instead of an exponential ramp, replace the charging resistor with a constant current source such as a FET based constant current diode. See Figure below a.

There are 10 2sh25 available. Delivery times may vary, especially during peak periods.

The Unijunction Transistor (UJT) | Thyristors | Electronics Textbook

Once the capacitor discharges below the valley point V Vthe E-RB1 resistance reverts back to high resistance, and the capacitor is free to charge again.

Delivery times may vary, 2sh25 during peak periods. Contact the seller — opens in a new window or tab and request a shipping method to your location. Read more about the condition.

The load resistor at B1 needs to be low to not affect the discharge time. The schematic symbol is Figure below c. It may be replaced by a short circuit. Report item — opens in a new window or tab. Any international shipping and import charges are paid in part to Pitney Bowes Inc. Email to friends Share on Facebook — opens in a new window or tab Share on Twitter — opens in a new window or tab Share on Pinterest — opens in a new window or tab Add to watch list.


If the charging resistor ever could supply that much current, the resistor would supply the valley current after the capacitor was discharged and the operating point would never reset back to the high resistance condition to the left of the peak point.

2SH25 Datasheet, PDF – Alldatasheet

Learn more — opens in a new window or tab. Add to watch list Remove from watch list. Not exactly what you want? Boolean Basics Intended for people with little or no exposure to digital logic, as well as those wanting a refresher or to understand Boolean algebra at a Quote of the day. The external resistor at B2 is optional. During capacitor discharge through the E-B1 saturation resistance, a pulse may be seen on the external B1 and B2 load resistors, Figure above.

Get an immediate offer. It is the job of the capacitor to supply the valley current I V. This item will be shipped through the Global Shipping Program and includes international tracking. Sell now — Have one to sell? Radio tubes are valves.

Though it serves a function similar to the unijunction transistor, the PUT is a three terminal thyristor. A brand-new, unused, unopened, undamaged item in its original packaging where packaging is applicable.


Contact the seller — opens in 2sh25 new window or tab and request a shipping method to your location. The product that related to the 2SH Because of wholesale price is different from sample price, our website can not state.

The variable resistor should have a minimum resistor in series with it to prevent a low pot setting from hanging at the valley point. The PUT equivalent of the unijunction transistor is shown in Figure below.

Sell now — Have one to sell? PUT relaxation oscillator with component values. Please enter a number 2sh25 than or equal to 3. Add to watch list Remove from watch list. Thereafter, increasing dataeheet results in decreasing voltage, down to the valley point. Credit Cards processed by PayPal Special financing available. Get the item you ordered or get your money back. Although the unijunction transistor is listed as obsolete read expensive if obtainablethe programmable unijunction transistor is alive and well.

United States and many other countries See details Import charges: Back to home page. A more accurate expression for frequency is given in Figure above. Image not available Photos not available for this dagasheet Stock photo. See all condition definitions — opens in a new window or tab 2sh25 who viewed this item also viewed.